CVE-2021-3311
Published:February 05, 2021
Updated:October 10, 2026
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 Packages
october/rain (PHP):
Affected version(s) >=v1.1.0 <v1.1.2Fix Suggestion:
Update to version v1.1.2october/rain (PHP):
Affected version(s) >=dev-backport/trust-hosts <v1.0.472Fix Suggestion:
Update to version v1.0.472Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Insufficient Session Expiration
EPSS
Base Score:
2.90