Textpattern CMS 4.9.0 contains a Broken Access Control vulnerability in the article management system that allows authenticated users with low privileges to modify articles owned by users with higher privileges. By manipulating the article ID parameter during the duplicate-and-save workflow in textpattern/include/txp_article.php, an attacker can bypass authorization checks and overwrite content belonging to other users.
History

Wed, 22 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
Title Authenticated Users Can Bypass Access Control to Alter Higher-Privilege Articles in Textpattern CMS 4.9.0

Wed, 22 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 21 Apr 2026 17:45:00 +0000

Type Values Removed Values Added
First Time appeared Textpattern
Textpattern textpattern
Vendors & Products Textpattern
Textpattern textpattern

Tue, 21 Apr 2026 16:45:00 +0000

Type Values Removed Values Added
Description Textpattern CMS 4.9.0 contains a Broken Access Control vulnerability in the article management system that allows authenticated users with low privileges to modify articles owned by users with higher privileges. By manipulating the article ID parameter during the duplicate-and-save workflow in textpattern/include/txp_article.php, an attacker can bypass authorization checks and overwrite content belonging to other users.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-04-21T00:00:00.000Z

Updated: 2026-04-22T15:35:46.859Z

Reserved: 2026-03-04T00:00:00.000Z

Link: CVE-2026-30452

cve-icon Vulnrichment

Updated: 2026-04-22T14:11:33.472Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-21T17:16:36.303

Modified: 2026-04-22T21:24:26.997

Link: CVE-2026-30452

cve-icon Redhat

No data.