{"id":"CVE-2021-24295","aliases":["EUVD-2021-11209","GHSA-3897-7ph5-mf8c"],"status":"published","title":"Time-based Blind SQL Injection in Spam protection, AntiSpam, FireWall by CleanTalk \u003c 5.153.4","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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.05612,"percentile":0.93018,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-89"],"published":"2021-05-17T16:48:53Z","modified":"2026-06-17T03:39:47Z","exploits":[{"source":"nuclei","id":"CVE-2021-24295","title":"Spam protection, AntiSpam, FireWall by CleanTalk \u003c 5.153.4 - Unauthenticated Blind SQL Injection","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24295.yaml"}],"products":[{"vendor":"cleantalk","product":"spam_protection\\,_antispam\\,_firewall"},{"vendor":"unknown","product":"spam protection, antispam, firewall by cleantalk"},{"vendor":"сleantalk","product":"spam protection, antispam, firewall by cleantalk"}],"references":[{"url":"https://wpscan.com/vulnerability/152171fc-888c-4275-a118-5a1e664ef28b","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://www.wordfence.com/blog/2021/05/sql-injection-vulnerability-patched-in-cleantalk-antispam-plugin/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-24295"},{"url":"https://github.com/advisories/GHSA-3897-7ph5-mf8c"}],"sources":{"cve":[{"id":"CVE-2021-24295","title":"Time-based Blind SQL Injection in Spam protection, AntiSpam, FireWall by CleanTalk \u003c 5.153.4","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.","status":"published","published":"2021-05-17T16:48:53Z","modified":"2024-08-03T19:28:23.468Z","cwes":["CWE-89"],"updated_at":"2026-11-02T14:33:05.000797Z"}],"euvd":[{"id":"EUVD-2021-11209","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.","status":"published","published":"2021-05-17T16:48:53Z","modified":"2024-08-03T19:28:23Z","updated_at":"2026-11-03T03:24:58.504484Z"}],"ghsa":[{"id":"GHSA-3897-7ph5-mf8c","title":"It was possible to exploit an Unauthenticated Time-Based Blind SQL Injection vulnerability in the...","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.","status":"published","published":"2022-05-24T19:02:37Z","modified":"2023-01-29T05:07:39Z","cwes":["CWE-89"],"updated_at":"2026-11-02T14:46:10.663769Z"}],"nvd":[{"id":"CVE-2021-24295","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.","status":"published","published":"2021-05-17T17:15:08.243Z","modified":"2026-06-17T03:39:47.027Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-89"],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}