CVEvulnerability
CVE-2021-3311
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2021-02-05
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-613
Description
An issue was discovered in October through build 471. It reactivates an old session ID (which had been invalid after a logout) once a new login occurs. NOTE: this violates the intended Auth/Manager.php authentication behavior but, admittedly, is only relevant if an old session ID is known to an attacker.
Affected configurations
• octobercms october (<= 1.0.471)
Related
Weakness · not in database (1)
References
- https://anisiosantos.me/october-cms-token-reactivation Exploit, Third Party Advisory
- https://github.com/octobercms/library/commit/642f597489e6f644d4bd9a0c267e864cabead024 Patch, Third Party Advisory
- https://octobercms.com/forum/chan/announcements Vendor Advisory
- https://anisiosantos.me/october-cms-token-reactivation Exploit, Third Party Advisory
- https://github.com/octobercms/library/commit/642f597489e6f644d4bd9a0c267e864cabead024 Patch, Third Party Advisory
- https://octobercms.com/forum/chan/announcements Vendor Advisory