CVE-2026-32935

MEDIUM

phpseclib's AES-CBC unpadding susceptible to padding oracle timing attack

Title source: cna
STIX 2.1

Description

phpseclib is a PHP secure communications library. Projects using versions 0.1.1 through 1.0.26, 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.

References (2)

Core 2

Scores

CVSS v3 5.9
EPSS 0.0037
EPSS Percentile 29.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-208
Status published
Products (7)
phpseclib/phpseclib < 1.0.27 (2 CPE variants)
phpseclib/phpseclib 0.1.1 - 1.0.27Packagist
phpseclib/phpseclib 2.0.0 - 2.0.52Packagist
phpseclib/phpseclib 3.0.0 - 3.0.50Packagist
phpseclib/phpseclib >= 0.1.1, < 1.0.27
phpseclib/phpseclib >= 2.0.0, < 2.0.52
phpseclib/phpseclib >= 3.0.0, < 3.0.50
Published Mar 20, 2026
Tracked Since Mar 20, 2026