CVE-2026-32935
March 20, 2026
phpseclib is a PHP secure communications library. Projects using versions 1.0.26 and below, 2.0.0 through 2.0.51, and 3.0.0 through 3.0.49 are vulnerable to a to padding oracle timing attack when using AES in CBC mode. This issue has been fixed in versions 1.0.27, 2.0.52 and 3.0.50.
Affected Packages
https://github.com/phpseclib/phpseclib.git (GITHUB):
Affected version(s) >=1.0.0 <1.0.27Fix Suggestion:
Update to version 1.0.27https://github.com/phpseclib/phpseclib.git (GITHUB):
Affected version(s) >=3.0.0 <3.0.50Fix Suggestion:
Update to version 3.0.50https://github.com/phpseclib/phpseclib.git (GITHUB):
Affected version(s) >=2.0.0 <2.0.52Fix Suggestion:
Update to version 2.0.52phpseclib/phpseclib (PHP):
Affected version(s) >=dev-master <1.0.27Fix Suggestion:
Update to version 1.0.27phpseclib/phpseclib (PHP):
Affected version(s) >=3.0.0 <3.0.50Fix Suggestion:
Update to version 3.0.50phpseclib/phpseclib (PHP):
Affected version(s) >=2.0.0 <2.0.52Fix Suggestion:
Update to version 2.0.52Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Observable Timing Discrepancy
EPSS
Base Score:
0.01
