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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.

PUBLISHED Reserved 2026-03-17 | Published 2026-03-20 | Updated 2026-05-08 | Assigner GitHub_M




HIGH: 8.2CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-208: Observable Timing Discrepancy

Product status

>= 3.0.0, < 3.0.50
affected

>= 2.0.0, < 2.0.52
affected

>= 0.1.1, < 1.0.27
affected

References

github.com/...seclib/security/advisories/GHSA-94g3-g5v7-q4jg

github.com/...ommit/ccc21aef71eb170e9bf819b167e67d1fd9e6e788

cve.org (CVE-2026-32935)

nvd.nist.gov (CVE-2026-32935)

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