CVE-2021-3311

CRITICAL

October < 1.0.471 - Insufficient Session Expiration

Title source: rule
STIX 2.1

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.

References (3)

Core 3
Core References
Vendor Advisory x_refsource_misc
https://octobercms.com/forum/chan/announcements
Exploit, Third Party Advisory x_refsource_misc
https://anisiosantos.me/october-cms-token-reactivation

Scores

CVSS v3 9.8
EPSS 0.0152
EPSS Percentile 81.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-613
Status published
Products (2)
october/rain 0 - 1.0.472Packagist
octobercms/october < 1.0.471
Published Feb 05, 2021
Tracked Since Feb 18, 2026