Vulnerability · Published Oct 17, 2026 · Assigned by VulnCheck

CVE-2026-111912Admidio 5.0.0 before 5.0.16 IDOR via Forum Topic Update

Medium 6.5

In plain English

A medium-severity authorization bypass via user-controlled key in admidio from Admidio. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 87.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Admidio	admidio	5.0.0 – before 5.0.16

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References

GitHub Security Advisory (GHSA-8256-4wm7-f628) vendor-advisory
VulnCheck Advisory: Admidio 5.0.0 before 5.0.16 IDOR via Forum Topic Update third-party-advisory