Membership disclosure via unchecked future-membership endpoint
Published Aug 30, 2026 · Updated Aug 30, 2026
Improper authorization in Admidio before 5.0.12 allows remote authenticated users to read another user's future role memberships. The reload_future_memberships mode in profile_function.php accepts a victim UUID and returns membership data without the profile authorization or time-window checks enforced by profile.php. Exploitation requires a visible target role and a victim with a future membership; the consequence is membership-data disclosure only.
Summary
What happened
Improper authorization in Admidio before 5.0.12 allows remote authenticated users to read another user's future role memberships. The reload_future_memberships mode in profile_function.php accepts a victim UUID and returns membership data without the profile authorization or time-window checks enforced by profile.php. Exploitation requires a visible target role and a victim with a future membership; the consequence is membership-data disclosure only.
The record
- CVE
- CVE-2026-82658
- Published
- Aug 30, 2026
- Updated
- Aug 30, 2026
- Vendor
- Admidio
- Product
- Admidio
- Classifications
- CWE-285, T1213
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 30, 2026CVE publishedPublication date reported by the CVE source.
- Aug 30, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <5.0.12
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Vendor advisory HTTP request proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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