# CVE-2026-30452: Textpattern CMS broken access control in article management

Source: https://junglewise.ai/threats/cve-2026-30452-textpattern-cms-broken-access-control-in-article-management  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-21. Updated: 2026-05-14  
License: CC BY 4.0 with a link back

CVE-2026-30452 · Severity: medium · CVSS 6.5 · Published 2026-04-21

Textpattern CMS, a platform used for building and managing websites, contains a security flaw in its article management system. This vulnerability allows a logged-in user with low-level permissions to modify or overwrite articles created by administrators or other high-privileged users. This could lead to unauthorized content changes, website defacement, or the loss of important editorial data.

Technologies: [Textpattern CMS](https://junglewise.ai/threats/technologies/textpattern-cms). Vendors: [Textpattern](https://junglewise.ai/threats/vendors/textpattern).

## Quick answers

**Is CVE-2026-30452 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-30452 being exploited in the wild.

**How severe is CVE-2026-30452?** Medium severity, with a CVSS score of 6.5, published 21 April 2026.

**Which products and versions are affected?** Textpattern CMS 4.9.0.

**Is there a fix for CVE-2026-30452?** A patch was published on 2026-02-14: Textpattern 4.9.1 released to address the access control regression. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-30452 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-30452?** Check whether you run Textpattern or Textpattern CMS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A broken access control vulnerability exists in Textpattern CMS 4.9.0 within the article management workflow. The flaw is located in 'textpattern/include/txp_article.php' and stems from an improper authorization check during the 'duplicate-and-save' process. By manipulating the article ID parameter in a web request, an authenticated attacker with low-level privileges can bypass ownership restrictions to overwrite content belonging to other users, including those with higher administrative roles. This issue was identified as a regression in version 4.9.0 and has been resolved in version 4.9.1.

## Affected products

- Textpattern Textpattern CMS 4.9.0

## Timeline

- 2026-02-14: patched: Textpattern 4.9.1 released to address the access control regression.
- 2026-04-21: disclosed: CVE-2026-30452 published.

## References

- [https://github.com/textpattern/textpattern](https://github.com/textpattern/textpattern)
- [https://textpattern.com/weblog/textpattern-491-released-security-fixes-patches-and-tweaks](https://textpattern.com/weblog/textpattern-491-released-security-fixes-patches-and-tweaks)

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