How severe is CVE-2023-51535?

CVE-2023-51535 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-51535 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-51535?

CVE-2023-51535 affects Cleantalk Spam Protection, Antispam, Firewall. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-51535?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-51535 have an EU (EUVD) identifier?

Yes. CVE-2023-51535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56247.

When was CVE-2023-51535 published?

CVE-2023-51535 was published on 2024-01-05 and last updated on 2026-06-17.

CVE-2023-51535

CVE-2023-51535 is a medium-severity vulnerability in Cleantalk Spam Protection, Antispam, Firewall with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-56247
Weakness: CWE-352
Affected product: Cleantalk Spam Protection, Antispam, Firewall
Published: 2024-01-05
Last modified: 2026-06-17

Description

Cross-Site Request Forgery (CSRF) vulnerability in СleanTalk - Anti-Spam Protection Spam protection, Anti-Spam, FireWall by CleanTalk.This issue affects Spam protection, Anti-Spam, FireWall by CleanTalk: from n/a through 6.20.

Frequently asked questions

What is CVE-2023-51535?: Cross-Site Request Forgery (CSRF) vulnerability in СleanTalk - Anti-Spam Protection Spam protection, Anti-Spam, FireWall by CleanTalk.This issue affects Spam protection, Anti-Spam, FireWall by CleanTalk: from n/a through 6.20.
How severe is CVE-2023-51535?: CVE-2023-51535 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-51535 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-51535?: CVE-2023-51535 affects Cleantalk Spam Protection, Antispam, Firewall. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-51535?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-51535 have an EU (EUVD) identifier?: Yes. CVE-2023-51535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56247.
When was CVE-2023-51535 published?: CVE-2023-51535 was published on 2024-01-05 and last updated on 2026-06-17.

References

https://patchstack.com/database/vulnerability/cleantalk-spam-protect/wordpress-spam-protection-anti-spam-firewall-by-cleantalk-plugin-6-20-cross-site-request-forgery-csrf-vulnerability?_s_id=cve

Affected products (1)

cpe:2.3:a:cleantalk:spam_protection\,_antispam\,_firewall:*:*:*:*:*:wordpress:*:*

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