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CVE-2026-32935

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

High8.2EPSS 0.40%
Published
Updated
Reserved
Assigned by
GitHub_M

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.

Scores

CVSS scores of CVE-2026-32935, by who scored it
Scored byCVSSScoreVector
GitHub_MCNA (assigner)4.0High8.2CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
NVDNVD · Modified4.0High8.2CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.40% · top 66% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.2.

Weakness

Affected products

  • phpseclib · phpseclib

    • affected >= 3.0.0, < 3.0.50
    • affected >= 2.0.0, < 2.0.52
    • affected >= 0.1.1, < 1.0.27

Affected packages

From reviewed advisories of the GitHub Advisory Database.

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated .