CVE-2022-2939

Name: CVE-2022-2939
Creator: NVD / NIST
Published: 2022-09-06T18:15:15.143+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2022-2939 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. The WP Cerber Security plugin for WordPress is vulnerable to security protection bypass in versions up to, and including 9.0, that makes user enumeration possible. This is due to improper validation on the value supplied through the 'author' parameter found in the ~/cerber-load.php file. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

The WP Cerber Security plugin for WordPress is vulnerable to security protection bypass in versions up to, and including 9.0, that makes user enumeration possible. This is due to improper validation on the value supplied through the 'author' parameter found in the ~/cerber-load.php file. In vulnerable versions, the plugin only blocks requests if the value supplied is numeric, making it possible for attackers to supply additional non-numeric characters to bypass the protection. The non-numeric characters are stripped and the user requested is displayed. This can be used by unauthenticated attackers to gather information about users that can targeted in further attacks.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.66%

46.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cerber	Wp Cerber Security\, Anti-Spam \& Malware Scan	<= 9.0

References

https://plugins.trac.wordpress.org/changeset/2772930/wp-cerber/trunk/cerber-load.phpPatch, Third Party Advisory
https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2939Third Party Advisory
https://plugins.trac.wordpress.org/changeset/2772930/wp-cerber/trunk/cerber-load.phpPatch, Third Party Advisory
https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2939Third Party Advisory

Timeline

Published: Sep 6, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-2939?

How severe is CVE-2022-2939?

CVE-2022-2939 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2022-2939?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-2939?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST