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CVE-2021-24295

36
FAUCET Score

CVE-2021-24295 describes an unauthenticated time-based blind SQL injection vulnerability in the Spam protection, AntiSpam, FireWall by CleanTalk WordPress Plugin versions prior to 5.153.4. This flaw allows an attacker to inject malicious SQL queries via the User-Agent header by manipulating specific cookies. Rated with a CVSS score of 7.5 (HIGH), the vulnerability has a low attack complexity and requires no user interaction, potentially leading to high confidentiality impact. While not listed in CISA's KEV catalog, a Nuclei template exists for detection, but there is no public Metasploit or ExploitDB code, and it currently shows no significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.153.4CPE matchmatch criteria
cpe:2.3:a:cleantalk:spam_protection\,_antispam\,_firewall:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.69%
Probability of exploitation in next 30 days
EPSS Percentile
90.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-24295 · Sep 24, 2025
This CVE's current EPSS score of 0.0469 is in the 84th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

wpscan.com / vulnerability/152171fc-888c-4275-a118-5a1e664ef28b
Third Party Advisory
wordfence.com / blog/2021/05/sql-injection-vulnerability-patched-in-cleantalk-antispam-plugin
ExploitThird Party Advisory