CVE-2026-32935

Publication date 20 March 2026

Last updated 15 September 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.9 · Medium

Score breakdown

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.

Status

Package Ubuntu Release Status
php-phpseclib 26.04 LTS resolute
Needs evaluation
25.10 questing Ignored end of life, was needs-triage
24.04 LTS noble
Needs evaluation
22.04 LTS jammy
Needs evaluation
20.04 LTS focal
Needs evaluation
18.04 LTS bionic
Needs evaluation
16.04 LTS xenial
Needs evaluation
php-phpseclib3 26.04 LTS resolute
Needs evaluation
25.10 questing Ignored end of life, was needs-triage
24.04 LTS noble
Needs evaluation
22.04 LTS jammy
Needs evaluation
phpseclib 26.04 LTS resolute
Fixed 1.0.24-1ubuntu0.1~esm1
25.10 questing Ignored end of life, was needs-triage
24.04 LTS noble
Fixed 1.0.23-1ubuntu0.1~esm1
22.04 LTS jammy
Fixed 1.0.20-1+deb12u3build0.22.04.1
20.04 LTS focal
Fixed 1.0.18-2ubuntu0.1~esm2
18.04 LTS bionic
Fixed 1.0.9-1ubuntu0.1~esm2
16.04 LTS xenial
Fixed 1.0.1-3ubuntu0.1+esm1

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Severity score breakdown

CVSS version:

Base score 8.2 · High

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

Base score 5.9 · Medium

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-8769-1
    • phpseclib vulnerability
    • 15 September 2026

Other references

Access our resources on patching vulnerabilities