CVE-2026-12434: Auth Bypass (CVSS 4.3)

Description

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.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0024

Probability of exploitation

0.15%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

References

Other References

https://plugins.trac.wordpress.org/browser/list-category-posts/tags/0.95.0/include/lcp-catlist.php#L623 https://plugins.trac.wordpress.org/browser/list-category-posts/tags/0.95.0/include/lcp-catlist.php#L94 https://plugins.trac.wordpress.org/browser/list-category-posts/tags/0.95.0/include/lcp-parameters.php#L208 https://plugins.trac.wordpress.org/browser/list-category-posts/tags/0.95.0/list-category-posts.php#L184 https://plugins.trac.wordpress.org/changeset?reponame=&old=3598587%40list-category-posts&new=3598587%40list-category-posts https://www.wordfence.com/threat-intel/vulnerabilities/id/3477baf1-71ef-44f3-938f-3e7d710e9df6?source=cve

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-12434? +

CVE-2026-12434 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0024, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-12434? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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