Auth bypass in Tag, Category, And Taxonomy Manager

CVE-2026-15231

The Tag, Category, and Taxonomy Manager WordPress plugin before 3.51.0 does not verify that a user is authorized to access a referenced post before processing it and returning derived data, allowing users with contributor privileges to disclose data from private or draft posts they do not own.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (22.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-15231: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

  • Tag, Category, And Taxonomy Manager — versions 0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-15231?
CVE-2026-15231 is a low-severity vulnerability in Tag, Category, And Taxonomy Manager, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 2.7/10. Published 2026-08-03.
How severe is CVE-2026-15231?
Low severity. CVSS v3 base score is 2.7 out of 10.