Auth bypass in Admidio
CVE-2026-82658
Admidio versions before 5.0.12 contain a broken access control vulnerability in profile_function.php that allows authenticated low-privilege users to read another user's future role memberships. Attackers can bypass profile-level authorization by directly calling the reload_future_memberships endpoint with a victim's user UUID to disclose sensitive membership information.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/Admidio/admidio/security/advisories/GHSA-4p3x-3rxj-v7c4 (vendor-advisory)
- www.vulncheck.com/advisories/admidio-before-5.0.12-broken-access-control-via-pr… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-82658?
- CVE-2026-82658 is a medium-severity vulnerability in Admidio, classified under Improper Authorization. CVSS score: 4.3/10. Published 2026-08-30.
- How severe is CVE-2026-82658?
- Medium severity. CVSS v3 base score is 4.3 out of 10.