CVE-2021-24295

HIGH EXPLOITED NUCLEI

Cleantalk Spam Protection, Antispam, Firewall - SQL Injection

Title source: rule

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.

Nuclei Templates (1)

Spam protection, AntiSpam, FireWall by CleanTalk < 5.153.4 - Unauthenticated Blind SQL Injection

HIGHVERIFIEDby DhiyaneshDK

FOFA: body="/plugin/cleantalk-spam-protect/"

References (2)

[Third Party Advisory] https://wpscan.com/vulnerability/152171fc-888c-4275-a118-5a1e664ef28b

[Exploit, Third Party Advisory] https://www.wordfence.com/blog/2021/05/sql-injection-vulnerability-patched-in-cleantalk-antispam-plugin/

Scores

CVSS v3 7.5

EPSS 0.4056

EPSS Percentile 97.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

VulnCheck KEV 2021-05-03

CWE

CWE-89

Status published

Products (1)

cleantalk/spam_protection\,_antispam\,_firewall < 5.153.4

Published May 17, 2021

Tracked Since Feb 18, 2026