WP Cerber Security <= 9.0 - User Enumeration Bypass

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.

Scores

EPSS (exploitation in 30 days)

0.88% · top 41% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

• CWE-200 Information Exposure (opens in a new tab)All about CWE-200 and its CVEs

Affected products

• gioni · WP Cerber Security, Anti-spam & Malware Scan

  • affected 9.0 – ≤ 9.0

References (2)

• https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2939 (opens in a new tab)x_refsource_MISCx_transferred
• https://plugins.trac.wordpress.org/changeset/2772930/wp-cerber/trunk/cerber-load.php (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2022-2939](https://trackcve.app/badge/CVE-2022-2939.svg)](https://trackcve.app/cve/CVE-2022-2939)

Record last updated 7 Feb 2025, 20:47 UTC.