What is CVE-2024-54367?

CVE-2024-54367 is a critical-severity vulnerability in Ultimate Member Forumwp, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2024-12-16.

How severe is CVE-2024-54367?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2024-54367 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Ultimate Member Forumwp

CVE-2024-54367

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

Vulnerability class: Insecure Deserialization

Published 2024-12-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (51.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Ultimate Member Forumwp — versions 0
Ultimatemember Forumwp

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

References

patchstack.com/database/Wordpress/Plugin/forumwp/vulnerability/wordpress-forumw… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2024-54367?: CVE-2024-54367 is a critical-severity vulnerability in Ultimate Member Forumwp, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2024-12-16.
How severe is CVE-2024-54367?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-54367 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.