CVE-2026-111912

Medium

Description

Admidio from 5.0.0 before 5.0.16 contains an insecure direct object reference vulnerability in ForumService::saveTopic() that allows authenticated members to modify other users' forum topics. Attackers can replace the topic_uuid parameter in their own topic_save request, reusing their CSRF token, to overwrite the victim topic's title and first post.

SeverityMedium

CVSS6.5

Exploit probability—

ProductAdmidio

PublishedOct 17, 2026

First seenOct 17, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

Admidio admidio5.0.16 or later

Vendor advisories

github.com/Admidio/admidio/security/advisories/GHSA-8256-4wm7-f628

Affected products

Product	Affected versions	Fixed in
Admidio admidio	5.0.0 ≤ v < 5.0.16	5.0.16

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