CVE-2025-15456 bg5sbk MiniCMS Publish page-edit.php improper authentication

Medium 6.9 Published 5 Jan 2026 Updated 23 Feb 2026

Remote attackers can bypass authentication in MiniCMS to access the publish page editor, potentially modifying content without authorization.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-15456?

CVE-2025-15456 is a medium-severity authentication bypass vulnerability in bg5sbk MiniCMS, published on 5 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability has been found in bg5sbk MiniCMS up to 1.8. The affected element is an unknown function of the file /mc-admin/page-edit.php of the component Publish Page Handler. Such manipulation leads to improper authentication. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The existence of this vulnerability is still disputed at present. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-287

Which versions are affected by CVE-2025-15456?

It affects 1 product.

Products include 1234n Minicms.

How do I fix CVE-2025-15456?

No fix has been published for CVE-2025-15456 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-15456 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15456 exists.

Sources

Also known as GHSA-p6hr-wcj3-8rqw.