Anti-Spam, Spam FireWall by CleanTalk: known security problems
19 known security problems reported for this WordPress plugin, with the affected versions, the fix and what to do.
Updated
In short
There are 19 known security problems on this page. Each one has a fixed version. Updating to version 6.90 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 plant harmful code that runs for your visitors or admins (up to and including 6.89.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.89.1
- Fixed in
- 6.90
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.90 or newer.
- Official ID
- CVE-2026-109198
- Report title
- Anti-Spam by CleanTalk <= 6.89.1 - Unauthenticated Stored Cross-Site Scripting via 'user_email' Registration Parameter
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (up to and including 6.88)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.88
- Fixed in
- 6.89
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.89 or newer.
- Official ID
- CVE-2026-103424
- Report title
- Anti-Spam by CleanTalk <= 6.88 - Unauthenticated Stored Cross-Site Scripting via Comment Content via ContactsEncoder Greedy Regex
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (before 6.87)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 6.87
- Fixed in
- 6.87
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.87 or newer.
- Official ID
- CVE-2026-19855
- Report title
- Spam protection, Honeypot, Anti-Spam by CleanTalk < 6.87 - Unauthenticated Arbitrary Shortcode Execution
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (up to and including 6.86)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.86
- Fixed in
- 6.87
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.87 or newer.
- Official ID
- CVE-2026-77830
- Report title
- Spam protection, Honeypot, Anti-Spam by CleanTalk <= 6.86 - Unauthenticated Stored Cross-Site Scripting via Comment Content aria-label Placeholder
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (up to and including 6.82)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.82
- Fixed in
- 6.83
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.83 or newer.
- Official ID
- CVE-2026-65437
- Report title
- Spam protection, AntiSpam, FireWall by CleanTalk <= 6.82 - Unauthenticated Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (before 6.79)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 6.79
- Fixed in
- 6.79
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.79 or newer.
- Official ID
- CVE-2026-8071
- Report title
- CleanTalk Anti-Spam. Spam Firewall & Bot protection < 6.79 - Unauthenticated Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 6.71)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.71
- Fixed in
- 6.72
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.72 or newer.
- Official ID
- CVE-2026-1490
- Report title
- Spam protection, Honeypot, Anti-Spam by CleanTalk <= 6.71 - Authorization Bypass via Reverse DNS (PTR record) Spoofing to Unauthenticated Arbitrary Plugin Installation
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 6.43.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.43.2
- Fixed in
- 6.44
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.44 or newer.
- Official ID
- CVE-2024-10542
- Report title
- Spam protection, Anti-Spam, FireWall by CleanTalk <= 6.43.2 - Authorization Bypass via Reverse DNS Spoofing to Unauthenticated Arbitrary Plugin Installation
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 6.44)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.44
- Fixed in
- 6.45
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.45 or newer.
- Official ID
- CVE-2024-10781
- Report title
- Spam protection, Anti-Spam, FireWall by CleanTalk <= 6.44 - Authorization Bypass due to Missing Empty Value Check to Unauthenticated Arbitrary Plugin Installation
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 6.20)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.20
- Fixed in
- 6.21
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.21 or newer.
- Official ID
- CVE-2023-51696
- Report title
- Spam protection, AntiSpam, FireWall by CleanTalk <= 6.20 - Cross-Site Request Forgery via apbct_settings__update_account_email
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 6.20) (2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.20
- Fixed in
- 6.21
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.21 or newer.
- Official ID
- CVE-2023-51535
- Report title
- Spam protection, AntiSpam, FireWall by CleanTalk <= 6.20 - Cross-Site Request Forgery
- First reported
- Sources
- Wordfence, seen
Someone 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 6.10
- Fixed in
- 6.11
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 6.11 or newer.
- Official ID
- CVE-2023-33996
- Report title
- Spam protection, AntiSpam, FireWall by CleanTalk <= 6.10 - Missing Authorization
- First reported
- Sources
- Wordfence, seen
Someone who already has an admin account 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 5.185
- Fixed in
- 5.185.1
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 5.185.1 or newer.
- Official ID
- CVE-2022-3302
- Report title
- AntiSpam by CleanTalk <= 5.185 - Authenticated (Administrator+) SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 5.173)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.173
- Fixed in
- 5.174.1
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 5.174.1 or newer.
- Official ID
- CVE-2022-28222
- Report title
- Spam protection, AntiSpam, FireWall by CleanTalk <= 5.173 - Reflected Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 5.173) (2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.173
- Fixed in
- 5.174.1
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 5.174.1 or newer.
- Official ID
- CVE-2022-28221
- Report title
- Spam protection, AntiSpam, FireWall by CleanTalk <= 5.173 - Reflected Cross-Site Scripting
- 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 5.153.3
- Fixed in
- 5.153.4
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 5.153.4 or newer.
- Official ID
- CVE-2021-24295
- Report title
- Spam protection, AntiSpam, FireWall by CleanTalk <= 5.153.3 - Unauthenticated Blind SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone 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 5.149
- Fixed in
- 5.149
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 5.149 or newer.
- Official ID
- CVE-2021-24131
- Report title
- Anti-Spam by CleanTalk < 5.149 - Authenticated SQL Injection
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 5.127.3)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.127.3
- Fixed in
- 5.127.4
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 5.127.4 or newer.
- Official ID
- CVE-2019-17515
- Report title
- Spam protection, AntiSpam, FireWall by CleanTalk <= 5.127.3 - Reflected Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (before 5.22)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 5.22
- Fixed in
- 5.22
- What to do
- If your site has an affected version, update Anti-Spam, Spam FireWall by CleanTalk to version 5.22 or newer.
- Report title
- Spam protection, AntiSpam, FireWall by CleanTalk < 5.22 - Reflected Cross-Site Scripting
- 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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