CVE-2021-24295
7.5 · HIGHOverview
CVE-2021-24295 is a high-severity vulnerability affecting cleantalk spam_protection\,_antispam\,_firewall. It was published on May 17, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from cleantalk. Update spam_protection\,_antispam\,_firewall to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| cleantalk | spam_protection\,_antispam\,_firewall | >= 0, < 5.153.4 | Affected |
References
Frequently Asked Questions
What is CVE-2021-24295?
CVE-2021-24295 is a high-severity vulnerability affecting cleantalk spam_protection\,_antispam\,_firewall. It was published on May 17, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-24295?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-24295?
Check the references section for vendor advisories and patches from cleantalk. Update spam_protection\,_antispam\,_firewall to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-24295?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-24295 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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