WordPress Ultimate Post Kit plugin <= 4.0.21 - Broken Access Control vulnerability

published 2026-03-25 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-15557

cvss: 6.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits: 0; none known

Missing Authorization vulnerability in bdthemes Ultimate Post Kit ultimate-post-kit allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Ultimate Post Kit: from n/a through <= 4.0.21.

Patch / fix

fixed in 1

bdthemes Ultimate Post Kit 4.0.22

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 7 mo ago (2026-03-27)

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Affected products

bdthemes Ultimate Post Kit

Classification

Weakness

CWE-862 Missing Authorization

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/Wordpress/Plugin/ultimate-post-kit/vulnerability/wordpress-ultimate-post-kit-plugin-4-0-21-broken-ac
vdb-entry

Sources

CVE List CVE-2026-24362
NVD CVE-2026-24362

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary