What is CVE-2026-12434?

CVE-2026-12434 is a medium-severity vulnerability in Fernandobt List Category Posts, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-07-16.

How severe is CVE-2026-12434?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Fernandobt List Category Posts

CVE-2026-12434

The List category posts plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 0.95.0 via the sanitize_status. This makes it possible for authenticated attackers, with contributor-level access and above, to extract titles, full content, excerpts, dates, authors, and custom-field metadata of other users' pending-review, scheduled, and trashed posts by embedding a crafted [catlist] shortcode in their own draft and previewing it. This vulnerability is a bypass of the incomplete fix introduced for CVE-2025-11377 in version 0.93.0.

Vulnerability class: Broken Access Control

Published 2026-07-16 · last modified 2026-07-16.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (33.8th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Fernandobt List Category Posts — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2026-12434?: CVE-2026-12434 is a medium-severity vulnerability in Fernandobt List Category Posts, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-07-16.
How severe is CVE-2026-12434?: Medium severity. CVSS v3 base score is 4.3 out of 10.