CVE-2021-24639: The OMGF WordPress plugin before 4.5.4 does not enforce path validation, authorisation and CSRF checks in the

Q: How do I fix CVE-2021-24639?

omgf: upgrade to 4.5.4. Exact commands for each OS are on this page.

Q: Is CVE-2021-24639 being exploited?

CVE-2021-24639 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-2021-24639 affect?

CVE-2021-24639 affects omgf. Severity is high (CVSS 8.1). The OMGF WordPress plugin before 4.5.4 does not enforce path validation, authorisation and CSRF checks in the omgf_ajax_empty_dir AJAX action, which allows any authenticated users to delete arbitrary files or folders on the server.

Q: How urgent is CVE-2021-24639?

Priority 48/100. High severity; Public exploit reference

This month

HIGH 8.1UPGRADE

CVE-2021-24639 is a high-severity flaw (CVSS 8.1) affecting omgf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The OMGF WordPress plugin before 4.5.4 does not enforce path validation, authorisation and CSRF checks in the omgf_ajax_empty_dir AJAX action, which allows any authenticated users to delete arbitrary files or folders on the server.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-22, CWE-352, CWE-862
Published	2021-09-20
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: ffw

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

Am I affected?

Timeline

2021-09-20 10:15 UTCPublished CVE record published
2026-06-17 03:40 UTCUpdated Record last modified

ffw omgf UPGRADE

Affected: < 4.5.4

Fixed in: 4.5.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy omgf || rpm -q omgf || omgf --version

2. UPGRADE to 4.5.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade omgf

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade omgf

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-2021-24639?

omgf: upgrade to 4.5.4. Exact commands for each OS are on this page.

Is CVE-2021-24639 being exploited?

CVE-2021-24639 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-2021-24639 affect?

CVE-2021-24639 affects omgf. Severity is high (CVSS 8.1). The OMGF WordPress plugin before 4.5.4 does not enforce path validation, authorisation and CSRF checks in the omgf_ajax_empty_dir AJAX action, which allows any authenticated users to delete arbitrary files or folders on the server.

How urgent is CVE-2021-24639?

Priority 48/100. High severity; Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2023-6600 HIGH 8.6 UPGRADE The OMGF | GDPR/DSGVO Compliant, Faster Google Fonts
CVE-2021-24638 CRITICAL 9.1 UPGRADE The OMGF WordPress plugin before 4.5.4 does not escape or validate the handle parameter of the REST API, which

References

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