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CVE-2021-24295

HIGH 7.5 CVSS 3.1
Published
May 17, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
contact@wpscan.com
Weakness
CWE-89
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

It was possible to exploit an Unauthenticated Time-Based Blind SQL Injection vulnerability in the Spam protection, AntiSpam, FireWall by CleanTalk WordPress Plugin before 5.153.4. The update_log function in lib/Cleantalk/ApbctWP/Firewall/SFW.php included a vulnerable query that could be injected via the User-Agent Header by manipulating the cookies set by the Spam protection, AntiSpam, FireWall by CleanTalk WordPress plugin before 5.153.4, sending an initial request to obtain a ct_sfw_pass_key cookie and then manually setting a separate ct_sfw_passed cookie and disallowing it from being reset.

Affected products and versions

  • СleanTalk Spam protection, AntiSpam, FireWall by CleanTalk — From 5.153.4 (including) to 5.153.4 (excluding)
  • cleantalk spam_protection\,_antispam\,_firewall — Before 5.153.4

References

  • wpscan.com https://wpscan.com/vulnerability/152171fc-888c-4275-a118-5a1e664ef28b Third Party Advisory
  • www.wordfence.com https://www.wordfence.com/blog/2021/05/sql-injection-vulnerability-patched-in-cleantalk-antispam-plugin/ Exploit, Third Party Advisory
  • nvd.nist.gov Official NVD record