CVE-2022-2939: The WP Cerber Security plugin for WordPress is vulnerable to security protection bypass in versions up to, and

Q: How do I fix CVE-2022-2939?

wp cerber security\, anti-spam \& malware scan: upgrade to newer than 9.0. Exact commands for each OS are on this page.

Q: Is CVE-2022-2939 being exploited?

CVE-2022-2939 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-2939 affect?

CVE-2022-2939 affects wp cerber security\, anti-spam \& malware scan. Severity is medium (CVSS 5.3). 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

Q: How urgent is CVE-2022-2939?

Priority 38/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2022-2939 is a medium-severity flaw (CVSS 5.3) affecting wp cerber security\, anti-spam \& malware scan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 chara

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-200
Published	2022-09-06
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: cerber

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-09-06 18:15 UTCPublished CVE record published
2026-06-17 04:42 UTCUpdated Record last modified

cerber wp cerber security\, anti-spam \& malware scan UPGRADE

Affected: <= 9.0

Fixed in: newer than 9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wp-cerber-security-anti-spam--malware-scan || rpm -q wp-cerber-security-anti-spam--malware-scan || wp-cerber-security-anti-spam--malware-scan --version

2. UPGRADE to newer than 9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wp-cerber-security-anti-spam--malware-scan

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wp-cerber-security-anti-spam--malware-scan

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-2939?

wp cerber security\, anti-spam \& malware scan: upgrade to newer than 9.0. Exact commands for each OS are on this page.

Is CVE-2022-2939 being exploited?

CVE-2022-2939 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-2939 affect?

CVE-2022-2939 affects wp cerber security\, anti-spam \& malware scan. Severity is medium (CVSS 5.3). 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

How urgent is CVE-2022-2939?

Priority 38/100. Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities · PHP vulnerabilities

Related CVEs

CVE-2022-4712 HIGH 7.2 UPGRADE The WP Cerber Security plugin for WordPress is vulnerable to stored cross-site scripting via the log parameter
CVE-2022-4417 MEDIUM 5.3 UPGRADE The WP Cerber Security, Anti-spam & Malware Scan WordPress plugin before 9.3.3 does not properly block access

References

← Back to latest CVEs