What is CVE-2026-82657?

CVE-2026-82657 is a high-severity vulnerability in Admidio, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-08-30.

How severe is CVE-2026-82657?

High severity. CVSS v3 base score is 7.5 out of 10.

Information disclosure in Admidio

CVE-2026-82657

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.

Vulnerability class: Information Disclosure

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Admidio

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-82657?: CVE-2026-82657 is a high-severity vulnerability in Admidio, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-08-30.
How severe is CVE-2026-82657?: High severity. CVSS v3 base score is 7.5 out of 10.