Session Fixation Affecting cacti package, versions <1.2.31-0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE324-CACTI-17373384
- published18 Jun 2026
- disclosed25 Jun 2026
Introduced: 18 Jun 2026
CVE-2026-40082 (opens in a new tab)How to fix?
Upgrade Alpine:3.24 cacti to version 1.2.31-0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream cacti package and not the cacti package as distributed by Alpine.
See How to fix? for Alpine:3.24 relevant fixed versions and status.
Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have missing session_regenerate_id() after login, leading to Session Fixation. session_regenerate_id() is NOT called after successful login. The login flow at auth_login.php:203-207 directly sets $_SESSION[SESS_USER_ID] without rotating the session ID. The session cookie configuration is otherwise good (httponly=true, samesite=Strict, secure=true for HTTPS at include/global.php:513-537), but these do not prevent session fixation via same-site vectors. This issue has been fixed in version 1.2.31.