CVE-2026-82657

HIGH 7.5

Admidio before 5.0.12 Authentication Bypass via RSS feeds

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-200
Vendor	admidio
Product	admidio
Published	Aug 30, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

Admidio / admidio

0 < 5.0.12

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/Admidio/admidio/security/advisories/GHSA-mg9h-42f8-2pmm vulncheck.com: https://www.vulncheck.com/advisories/admidio-before-5.0.12-authentication-bypass-via-rss-feeds

Credits

🔍 arpitjain099