CVE-2026-40082
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.4
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- EPSS probability
- 0.32%
- CWE
- CWE-384
- Published
- 2026-06-25
- Last modified
- 2026-06-26
Affected products
- Cacti cacti
Weakness type
Related vulnerabilities
- CVE-2026-64857 — tirreno has Session Fixation in Login Authentication
- CVE-2026-86674 — ningzichun Student Management System login.php session_start session fixiation
- CVE-2026-76196 — Photoshop Mobile | Session Fixation (CWE-384)
- CVE-2026-86279 — SourceCodester Syllabus-Aligned Learning Management & Examination System Login auth_process.php session fixiation
- CVE-2026-85238 — Session Fixation in MISP CustomAuth Authentication Allows Session Hijacking
- CVE-2026-18527 — IBM Application Runtime Expert (ARE) for IBM i is vulnerable to a user gaining elevated privileges and sensitive information [, ].
- CVE-2026-81826 — Flowintel Fails to Invalidate Active Sessions After Password Change
- CVE-2026-70594 — Ghost: Session Fixation in Ghost Admin