WP Fastest Cache: known security problems
38 known security problems reported for this WordPress plugin, with the affected versions, the fix and what to do.
Updated
In short
There are 38 known security problems on this page. Each one has a fixed version. Updating to version 1.5.1 or newer covers every fixed problem listed here.
Based on public reports. Check the plugin’s changelog. Watchfox AI may be wrong.
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A stranger could use it to harm your site
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- From 0.8.7.7 up to and including 1.5.0
- Fixed in
- 1.5.1
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.5.1 or newer.
- Official ID
- CVE-2026-74916
- Report title
- WP Fastest Cache – WordPress Cache Plugin 0.8.7.7 - 1.5.0 - Unauthenticated Cache Poisoning
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (up to and including 1.5.0)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.5.0
- Fixed in
- 1.5.1
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.5.1 or newer.
- Official ID
- CVE-2026-19760
- Report title
- WP Fastest Cache <= 1.5.0 - Unauthenticated Stored Cross-Site Scripting via HTTP Host Header
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (up to and including 1.5.0) (2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.5.0
- Fixed in
- 1.5.1
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.5.1 or newer.
- Official ID
- CVE-2026-74932
- Report title
- Fastest Cache <= 1.5.0 - Unauthenticated Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Anyone with an account on your site, even a basic one could do things on your site they should not be allowed to
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.4.0
- Fixed in
- 1.4.1
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.4.1 or newer.
- Official ID
- CVE-2025-10476
- Report title
- WP Fastest Cache <= 1.4.0 - Missing Authorization to Authenticated (Subscriber+) DB Cleanup Actions
- First reported
- Sources
- Wordfence, seen
Someone who already has an admin account could read or delete private files on your server
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.2.6
- Fixed in
- 1.2.7
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.2.7 or newer.
- Official ID
- CVE-2024-4347
- Report title
- WP Fastest Cache <= 1.2.6 - Authenticated (Administrator+) Arbitrary File Deletion
- First reported
- Sources
- Wordfence, seen
A stranger could read or change the data in your site’s database
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.2.1
- Fixed in
- 1.2.2
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.2.2 or newer.
- Official ID
- CVE-2023-6063
- Report title
- WP Fastest Cache <= 1.2.1 - Unauthenticated SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone who already has an admin account could use it to harm your site
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.4
- Fixed in
- 1.1.5
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.5 or newer.
- Official ID
- CVE-2023-1938
- Report title
- WP Fastest Cache <= 1.1.4 - Authenticated(Administrator+) Blind Server Side Request Forgery via check_url
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 1.1.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1919
- Report title
- WP Fastest Cache <= 1.1.2 - Cross-Site Request Forgery via 'wpfc_preload_single_save_settings_callback'
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 1.1.2) (2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1925
- Report title
- WP Fastest Cache <= 1.1.2 - Cross-Site Request Forgery via 'wpfc_clear_cache_of_allsites_callback'
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 1.1.2) (3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1921
- Report title
- WP Fastest Cache <= 1.1.2 - Cross-Site Request Forgery via 'wpfc_start_cdn_integration_ajax_request_callback'
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 1.1.2) (4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1918
- Report title
- WP Fastest Cache <= 1.1.2 - Cross-Site Request Forgery via 'wpfc_preload_single_callback'
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 1.1.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1929
- Report title
- WP Fastest Cache <= 1.1.2 - Missing Authorization in 'wpfc_purgecache_varnish_callback'
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 1.1.2) (5)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1923
- Report title
- WP Fastest Cache <= 1.1.2 - Cross-Site Request Forgery via 'wpfc_remove_cdn_integration_ajax_request_callback'
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 1.1.2) (6)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1927
- Report title
- WP Fastest Cache <= 1.1.2 - Cross-Site Request Forgery via 'deleteCssAndJsCacheToolbar'
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 1.1.2) (2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1928
- Report title
- WP Fastest Cache <= 1.1.2 - Missing Authorization in 'wpfc_preload_single_callback'
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 1.1.2) (7)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1922
- Report title
- WP Fastest Cache <= 1.1.2 - Cross-Site Request Forgery via 'wpfc_pause_cdn_integration_ajax_request_callback'
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 1.1.2) (8)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1924
- Report title
- WP Fastest Cache <= 1.1.2 - Cross-Site Request Forgery via 'wpfc_toolbar_save_settings_callback'
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 1.1.2) (3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1375
- Report title
- WP Fastest Cache <= 1.1.2 - Missing Authorization to Cache Deletion
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 1.1.2) (4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1931
- Report title
- WP Fastest Cache <= 1.1.2 - Missing Authorization in 'deleteCssAndJsCacheToolbar'
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 1.1.2) (9)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1926
- Report title
- WP Fastest Cache <= 1.1.2 - Cross-Site Request Forgery via 'deleteCacheToolbar'
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 1.1.2) (5)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1930
- Report title
- WP Fastest Cache <= 1.1.2 - Missing Authorization in 'wpfc_clear_cache_of_allsites_callback'
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 1.1.2) (10)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.1.2
- Fixed in
- 1.1.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 1.1.3 or newer.
- Official ID
- CVE-2023-1920
- Report title
- WP Fastest Cache <= 1.1.2 - Cross-Site Request Forgery via 'wpfc_purgecache_varnish_callback'
- First reported
- Sources
- Wordfence, seen
Someone could read or delete private files on your server (up to and including 0.8.9.0)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 0.8.9.0
- Fixed in
- 0.8.9.1
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.9.1 or newer.
- Official ID
- CVE-2019-6726
- Report title
- WP Fastest Cache <= 0.8.9.0 - Directory Traversal to Arbitrary File Deletion
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (before 0.9.5)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 0.9.5
- Fixed in
- 0.9.5
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.9.5 or newer.
- Official ID
- CVE-2021-24870
- Report title
- WP Fastest Cache < 0.9.5 - Cross-Site Request Forgery to Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Anyone with an account on your site, even a basic one could read or change the data in your site’s database
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 0.9.5
- Fixed in
- 0.9.5
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.9.5 or newer.
- Official ID
- CVE-2021-24869
- Report title
- WP Fastest Cache < 0.9.5 - Authenticated (Subscriber+) SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone could read or delete private files on your server (before 0.9.1.7)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 0.9.1.7
- Fixed in
- 0.9.1.7
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.9.1.7 or newer.
- Official ID
- CVE-2021-20714
- Report title
- WP Fastest Cache <= 0.9.1.6 - Authenticated (Admin+) Directory Traversal to Arbitrary File Deletion
- First reported
- Sources
- Wordfence, seen
Anyone with an account on your site, even a basic one could read or delete private files on your server
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 0.9.0.3
- Fixed in
- 0.9.0.3
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.9.0.3 or newer.
- Official ID
- CVE-2020-36836
- Report title
- WP Fastest Cache <= 0.9.0.2 - Authenticated (Subscriber+) Arbitrary File Deletion
- First reported
- Sources
- Wordfence, seen
Someone could use it to harm your site
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 0.8.9.5
- Fixed in
- 0.8.9.6
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.9.6 or newer.
- Official ID
- CVE-2019-13635
- Report title
- WP Fastest Cache <= 0.8.9.5 - Directory Traversal
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 0.8.8.5)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 0.8.8.5
- Fixed in
- 0.8.8.6
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.8.6 or newer.
- Official ID
- CVE-2018-17584
- Report title
- WP Fastest Cache <= 0.8.8.5 - Cross-Site Request Forgery via page to wpfastestcacheoptions
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 0.8.8.5)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 0.8.8.5
- Fixed in
- 0.8.8.6
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.8.6 or newer.
- Official ID
- CVE-2018-17586
- Report title
- WP Fastest Cache <= 0.8.8.5 - Cross-Site Scripting via rules[0][content] parameter
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 0.8.8.5) (2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 0.8.8.5
- Fixed in
- 0.8.8.6
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.8.6 or newer.
- Official ID
- CVE-2018-17585
- Report title
- WP Fastest Cache <= 0.8.8.5 - Cross-Site Scripting via wpFastestCachePage options, wpFastestCachePreload_number or wpFastestCacheLanguage parameter
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 0.8.8.5) (3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 0.8.8.5
- Fixed in
- 0.8.8.6
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.8.6 or newer.
- Official ID
- CVE-2018-17583
- Report title
- WP Fastest Cache <= 0.8.8.5 - Cross-Site Scripting via the rules[0][content] parameter in a wpfc_save_exclude_pages action
- First reported
- Sources
- Wordfence, seen
Someone could read or change the data in your site’s database (up to and including 0.8.7.4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 0.8.7.4
- Fixed in
- 0.8.7.5
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.7.5 or newer.
- Report title
- WP Fastest Cache <= 0.8.7.4 - SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone could read or delete private files on your server (up to and including 0.8.5.9)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 0.8.5.9
- Fixed in
- 0.8.6.0
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.6.0 or newer.
- Report title
- WP Fastest Cache <= 0.8.5.9 - Local File Inclusion
- First reported
- Sources
- Wordfence, seen
Someone could read or delete private files on your server (up to and including 0.8.5.7)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 0.8.5.7
- Fixed in
- 0.8.5.8
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.5.8 or newer.
- Report title
- WP Fastest Cache <= 0.8.5.7 - Local File Inclusion
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to (up to and including 0.8.5.7)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 0.8.5.7
- Fixed in
- 0.8.5.8
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.5.8 or newer.
- Report title
- WP Fastest Cache <= 0.8.5.7 - Missing Authorization
- First reported
- Sources
- Wordfence, seen
Someone could read or change the data in your site’s database (before 0.8.4.9)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 0.8.4.9
- Fixed in
- 0.8.4.9
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.4.9 or newer.
- Official ID
- CVE-2015-9316
- Report title
- WP Fastest Cache < 0.8.4.9 - SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (before 0.8.3.5)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 0.8.3.5
- Fixed in
- 0.8.3.5
- What to do
- If your site has an affected version, update WP Fastest Cache to version 0.8.3.5 or newer.
- Official ID
- CVE-2015-4089
- Report title
- WP Fastest Cache < 0.8.3.5 - Multiple Cross-Site Request Forgery
- First reported
- Sources
- Wordfence, seen
Where this comes from
We collect these reports from public security sources and rewrite them in plain words. Each problem shows its sources and the date we first saw it. This page never says whether your own site is affected: only a check of your site’s versions can tell.
Get an email when your site is affected.
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