CVE-2026-82657 Admidio before 5.0.12 Authentication Bypass via RSS feeds
Unauthenticated attackers can access private forum and announcement data via RSS feeds, exposing sensitive user information.
- 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-2026-82657?
CVE-2026-82657 is a high-severity missing authorization vulnerability in admidio, published on 30 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Admidio before 5.0.12 fails to enforce login-only module restrictions in RSS feed endpoints for forum and announcements modules. Unauthenticated attackers can retrieve forum topics and announcements by sending GET requests to rss/forum.php or rss/announcements.php, disclosing titles, full post text, author names, and timestamps.
Weakness: CWE-200
Which versions are affected by CVE-2026-82657?
How do I fix CVE-2026-82657?
No fix has been published for CVE-2026-82657 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-82657 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82657 exists.
Sources
Also known as GHSA-mg9h-42f8-2pmm, GHSA-w236-q4gr-7x7m.