CVE-2026-40082
CVE-2026-40082 · Cacti: Session Fixation via missing session_regenerate_id() after login
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 5.4 · Medium · EPSS 0.3% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
cacti
- Versions
- < 1.2.31: Affected
No fix published
cacti Debian:12
- Versions
- 1.2.24+ds1-1
- 1.2.24+ds1-1+deb12u1
- 1.2.24+ds1-1+deb12u2
- 1.2.24+ds1-1+deb12u3
- 1.2.24+ds1-1+deb12u4
- 1.2.24+ds1-1+deb12u5
- 1.2.25+ds1-1
- 1.2.25+ds1-2
- 1.2.26+ds1-1
- 1.2.27+ds1-1
- 1.2.27+ds1-2
- 1.2.28+ds1-1
- 1.2.28+ds1-2
- 1.2.28+ds1-3
- 1.2.28+ds1-4
- 1.2.30+ds1-1
- 1.2.30+ds1-2
- 1.2.30+ds1-3
- 1.2.31+ds1-1
- 1.2.31+ds1-2
- 1.2.31+ds1-3
- 1.2.31+ds1-4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
cacti Debian:13
- Versions
- 1.2.30+ds1-1
- 1.2.30+ds1-2
- 1.2.30+ds1-3
- 1.2.31+ds1-1
- 1.2.31+ds1-2
- 1.2.31+ds1-3
- 1.2.31+ds1-4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
cacti Debian:14
- Versions
- 1.2.30+ds1-1
- 1.2.30+ds1-2
- 1.2.30+ds1-3
- Affected ranges
- ECOSYSTEM: < 1.2.31+ds1-1
Update to 1.2.31+ds1-1
cacti Ubuntu:Pro:14.04:LTS
- Versions
- 0.8.8b+dfsg-3
- 0.8.8b+dfsg-5
- 0.8.8b+dfsg-5ubuntu0.1
- 0.8.8b+dfsg-5ubuntu0.2
- 0.8.8b+dfsg-5ubuntu0.2+esm1
- 0.8.8b+dfsg-5ubuntu0.2+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
cacti Ubuntu:Pro:16.04:LTS
- Versions
- 0.8.8f+ds1-2
- 0.8.8f+ds1-3
- 0.8.8f+ds1-4
- 0.8.8f+ds1-4ubuntu1
- 0.8.8f+ds1-4ubuntu2
- 0.8.8f+ds1-4ubuntu3
- 0.8.8f+ds1-4ubuntu4
- 0.8.8f+ds1-4ubuntu4.16.04
- 0.8.8f+ds1-4ubuntu4.16.04.1
- 0.8.8f+ds1-4ubuntu4.16.04.2
- 0.8.8f+ds1-4ubuntu4.16.04.2+esm1
- 0.8.8f+ds1-4ubuntu4.16.04.2+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
cacti Ubuntu:Pro:18.04:LTS
- Versions
- 1.1.18+ds1-1
- 1.1.27+ds1-2
- 1.1.27+ds1-3
- 1.1.28+ds1-2
- 1.1.35+ds1-1
- 1.1.36+ds1-1
- 1.1.38+ds1-1
- 1.1.38+ds1-1ubuntu0.1~esm1
- 1.1.38+ds1-1ubuntu0.1~esm3
- 1.1.38+ds1-1ubuntu0.1~esm4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
cacti Ubuntu:Pro:20.04:LTS
- Versions
- 1.2.4+ds1-2ubuntu3
- 1.2.9+ds1-1ubuntu1
- 1.2.9+ds1-1ubuntu2
- 1.2.10+ds1-1ubuntu1
- 1.2.10+ds1-1ubuntu1+esm1
- 1.2.10+ds1-1ubuntu1.1
- 1.2.10+ds1-1ubuntu1.1+esm1
- 1.2.10+ds1-1ubuntu1.1+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
cacti Ubuntu:Pro:22.04:LTS
- Versions
- 1.2.16+ds1-2ubuntu1
- 1.2.19+ds1-2ubuntu1
- 1.2.19+ds1-2ubuntu1+esm1
- 1.2.19+ds1-2ubuntu1.1
- 1.2.19+ds1-2ubuntu1.1+esm1
- 1.2.19+ds1-2ubuntu1.1+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
cacti Ubuntu:24.04:LTS
- Versions
- 1.2.25+ds1-2
- 1.2.26+ds1-1
- 1.2.26+ds1-1ubuntu0.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
cacti Ubuntu:25.10
- Versions
- 1.2.28+ds1-4ubuntu1
- 1.2.30+ds1-1ubuntu1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
cacti Ubuntu:26.10
- Versions
- 1.2.30+ds1-1ubuntu2
- 1.2.30+ds1-1ubuntu3
- 1.2.31+ds1-3ubuntu2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
cacti Ubuntu:26.04:LTS
- Versions
- 1.2.30+ds1-1ubuntu1
- 1.2.30+ds1-1ubuntu2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published