Quick answers
- Is CVE-2026-82655 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-82655 being exploited in the wild.
- How severe is CVE-2026-82655?
- High severity, with a CVSS score of 7.5, published 30 August 2026.
- Which products and versions are affected?
- Admidio < 5.0.12.
- Is there a fix for CVE-2026-82655?
- A patch was published on 2026-08-30: Version 5.0.12 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-82655 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-82655?
- Check whether you run Admidio at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
This is a blind SQL injection vulnerability (CWE-89) in modules/groups-roles/lists_show.php and src/Roles/Entity/ListConfiguration.php. The root cause is insufficient input validation: the relation_type_list GET parameter undergoes only HTML encoding (strip_tags and htmlspecialchars) but is directly concatenated into an SQL IN clause without prepared statement binding or UUID validation. An unauthenticated attacker can bypass permission checks by providing a valid-format but non-existent UUID in the role_list parameter, causing the permission validation loop to be skipped. The attacker then injects SQL through relation_type_list (e.g., using backslash escaping or comment syntax) to extract database contents. Since results are not displayed directly, the attacker constructs queries that trigger cardinality errors, creating a boolean oracle to extract data. The file lacks login enforcement, allowing pre-authentication access. Fixed in version 5.0.12.
Affected products
- Admidio Admidio < 5.0.12
Timeline
- 2026-08-16: disclosed
- 2026-08-30: patched: Version 5.0.12 released