CVE-2024-54367: Deserialization of Untrusted Data vulnerability in Ultimate Member ForumWP forumwp allows Object Injection.Thi

Q: How do I fix CVE-2024-54367?

forumwp: upgrade to 2.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2024-54367 being exploited?

CVE-2024-54367 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-2024-54367 affect?

CVE-2024-54367 affects forumwp. Severity is critical (CVSS 9.8). Deserialization of Untrusted Data vulnerability in Ultimate Member ForumWP forumwp allows Object Injection.This issue affects ForumWP: from n/a through <= 2.1.0.

Q: How urgent is CVE-2024-54367?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2024-54367 is a critical-severity flaw (CVSS 9.8) affecting forumwp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Deserialization of Untrusted Data vulnerability in Ultimate Member ForumWP forumwp allows Object Injection.This issue affects ForumWP: from n/a through <= 2.1.0.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-502
Published	2024-12-16
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: ultimatemember

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

Am I affected?

Timeline

2024-12-16 15:15 UTCPublished CVE record published
2026-06-17 08:10 UTCUpdated Record last modified

ultimatemember forumwp UPGRADE

Affected: < 2.1.1

Fixed in: 2.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.1.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade forumwp

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-2024-54367?

forumwp: upgrade to 2.1.1. Exact commands for each OS are on this page.

Is CVE-2024-54367 being exploited?

CVE-2024-54367 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-2024-54367 affect?

CVE-2024-54367 affects forumwp. Severity is critical (CVSS 9.8). Deserialization of Untrusted Data vulnerability in Ultimate Member ForumWP forumwp allows Object Injection.This issue affects ForumWP: from n/a through <= 2.1.0.

How urgent is CVE-2024-54367?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-8428 HIGH 8.8 UPGRADE The ForumWP – Forum & Discussion Board Plugin plugin for WordPress is vulnerable to Privilege Escalation via I
CVE-2024-11204 MEDIUM 6.1 UPGRADE The ForumWP – Forum & Discussion Board plugin for WordPress is vulnerable to Reflected Cross-Site Scripting vi
CVE-2024-10879 MEDIUM 6.1 UPGRADE The ForumWP – Forum & Discussion Board plugin for WordPress is vulnerable to Reflected Cross-Site Scripting du

References

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