CVE-2025-15458 bg5sbk MiniCMS Article post-edit.php improper authentication

Medium 6.9 Published 5 Jan 2026 Updated 23 Feb 2026

Remote attackers can bypass authentication in MiniCMS to modify articles, posing a risk to content integrity and administrative access.

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-2025-15458?

CVE-2025-15458 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 was determined in bg5sbk MiniCMS up to 1.8. This affects an unknown function of the file /mc-admin/post-edit.php of the component Article Handler. Executing a manipulation can lead to improper authentication. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-287

Which versions are affected by CVE-2025-15458?

It affects 1 product.

Products include 1234n Minicms.

How do I fix CVE-2025-15458?

No fix has been published for CVE-2025-15458 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-2025-15458 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15458 exists.

Sources

Also known as GHSA-3rg8-47q7-qh6r.