Bug 2493266 (CVE-2026-40082) - CVE-2026-40082 Cacti: Cacti: Session Fixation vulnerability due to missing session regeneration after login
Summary: CVE-2026-40082 Cacti: Cacti: Session Fixation vulnerability due to missing se...
Keywords:
Status: NEW
Alias: CVE-2026-40082
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2493350
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-26 00:02 UTC by OSIDB Bzimport
Modified: 2026-06-26 07:03 UTC (History)
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Description OSIDB Bzimport 2026-06-26 00:02:00 UTC 
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.
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