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CVE-2026-32935

CVE-2026-32935 · phpseclib's AES-CBC unpadding susceptible to padding oracle timing attack

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

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.

CVSS 8.2 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: system · php

Affected products and versions

  • phpseclib

    Versions
    • >= 3.0.0, < 3.0.50: Affected
    • >= 2.0.0, < 2.0.52: Affected
    • >= 0.1.1, < 1.0.27: Affected

    No fix published

  • php-phpseclib Debian:12

    Versions
    • 2.0.42-1
    • 2.0.42-1+deb12u1
    • 2.0.42-1+deb12u2
    Affected ranges
    • ECOSYSTEM: < 2.0.42-1+deb12u3

    Update to 2.0.42-1+deb12u3

  • php-phpseclib Debian:13

    Versions
    • 2.0.48-3
    Affected ranges
    • ECOSYSTEM: < 2.0.48-3+deb13u1

    Update to 2.0.48-3+deb13u1

  • php-phpseclib Debian:14

    Versions
    • 2.0.48-3
    • 2.0.49-1
    • 2.0.50-1
    • 2.0.51-1
    Affected ranges
    • ECOSYSTEM: < 2.0.52-1

    Update to 2.0.52-1

  • php-phpseclib3 Debian:12

    Versions
    • 3.0.19-1
    • 3.0.19-1+deb12u1
    • 3.0.19-1+deb12u2
    • 3.0.19-1+deb12u3
    Affected ranges
    • ECOSYSTEM: < 3.0.19-1+deb12u4

    Update to 3.0.19-1+deb12u4

  • php-phpseclib3 Debian:13

    Versions
    • 3.0.43-2
    Affected ranges
    • ECOSYSTEM: < 3.0.43-2+deb13u1

    Update to 3.0.43-2+deb13u1

  • php-phpseclib3 Debian:14

    Versions
    • 3.0.43-2
    • 3.0.44-1
    • 3.0.44-2
    • 3.0.45-1
    • 3.0.46-1
    • 3.0.46-2
    • 3.0.47-1
    • 3.0.48-1
    • 3.0.49-1
    Affected ranges
    • ECOSYSTEM: < 3.0.50-1

    Update to 3.0.50-1

  • phpseclib Debian:12

    Versions
    • 1.0.20-1
    • 1.0.20-1+deb12u1
    • 1.0.20-1+deb12u2
    Affected ranges
    • ECOSYSTEM: < 1.0.20-1+deb12u3

    Update to 1.0.20-1+deb12u3

  • phpseclib Debian:13

    Versions
    • 1.0.23-6
    Affected ranges
    • ECOSYSTEM: < 1.0.23-6+deb13u1

    Update to 1.0.23-6+deb13u1

  • phpseclib/phpseclib Packagist

    Versions
    • 3.0.0
    • 3.0.1
    • 3.0.10
    • 3.0.11
    • 3.0.12
    • 3.0.13
    • 3.0.14
    • 3.0.15
    • 3.0.16
    • 3.0.17
    • 3.0.18
    • 3.0.19
    • 3.0.2
    • 3.0.20
    • 3.0.21
    • 3.0.22
    • 3.0.23
    • 3.0.3
    • 3.0.33
    • 3.0.34
    • 3.0.35
    • 3.0.36
    • 3.0.37
    • 3.0.38
    • 3.0.39
    • 3.0.4
    • 3.0.40
    • 3.0.41
    • 3.0.42
    • 3.0.43
    • 3.0.44
    • 3.0.45
    • 3.0.46
    • 3.0.47
    • 3.0.48
    • 3.0.49
    • 3.0.5
    • 3.0.6
    • 3.0.7
    • 3.0.8
    • 3.0.9
    Affected ranges
    • ECOSYSTEM: ≥ 3.0.0, < 3.0.50

    Update to 3.0.50

  • phpseclib/phpseclib Packagist

    Versions
    • 2.0.0
    • 2.0.1
    • 2.0.10
    • 2.0.11
    • 2.0.12
    • 2.0.13
    • 2.0.14
    • 2.0.15
    • 2.0.16
    • 2.0.17
    • 2.0.18
    • 2.0.19
    • 2.0.2
    • 2.0.20
    • 2.0.21
    • 2.0.22
    • 2.0.23
    • 2.0.24
    • 2.0.25
    • 2.0.26
    • 2.0.27
    • 2.0.28
    • 2.0.29
    • 2.0.3
    • 2.0.30
    • 2.0.31
    • 2.0.32
    • 2.0.33
    • 2.0.34
    • 2.0.35
    • 2.0.36
    • 2.0.37
    • 2.0.38
    • 2.0.39
    • 2.0.4
    • 2.0.40
    • 2.0.41
    • 2.0.42
    • 2.0.43
    • 2.0.44
    • 2.0.45
    • 2.0.46
    • 2.0.47
    • 2.0.48
    • 2.0.49
    • 2.0.5
    • 2.0.50
    • 2.0.51
    • 2.0.6
    • 2.0.7
    • 2.0.8
    • 2.0.9
    Affected ranges
    • ECOSYSTEM: ≥ 2.0.0, < 2.0.52

    Update to 2.0.52

  • phpseclib/phpseclib Packagist

    Versions
    • 0.3.0
    • 0.3.1
    • 0.3.10
    • 0.3.5
    • 0.3.6
    • 0.3.7
    • 0.3.8
    • 0.3.9
    • 1.0.0
    • 1.0.1
    • 1.0.10
    • 1.0.11
    • 1.0.12
    • 1.0.13
    • 1.0.14
    • 1.0.15
    • 1.0.16
    • 1.0.17
    • 1.0.18
    • 1.0.19
    • 1.0.2
    • 1.0.20
    • 1.0.21
    • 1.0.22
    • 1.0.23
    • 1.0.24
    • 1.0.25
    • 1.0.26
    • 1.0.3
    • 1.0.4
    • 1.0.5
    • 1.0.6
    • 1.0.7
    • 1.0.8
    • 1.0.9
    Affected ranges
    • ECOSYSTEM: ≥ 0.1.1, < 1.0.27

    Update to 1.0.27

  • php-phpseclib Ubuntu:Pro:16.04:LTS

    Versions
    • 2.0.1-1
    • 2.0.1-1build1
    Affected ranges
    • ECOSYSTEM: < 2.0.1-1ubuntu0.1~esm1

    Update to 2.0.1-1ubuntu0.1~esm1

  • php-phpseclib Ubuntu:Pro:18.04:LTS

    Versions
    • 2.0.6-1
    • 2.0.7-1
    • 2.0.9-1
    • 2.0.9-1ubuntu0.1~esm2
    Affected ranges
    • ECOSYSTEM: < 2.0.9-1ubuntu0.1~esm3

    Update to 2.0.9-1ubuntu0.1~esm3

  • phpseclib Ubuntu:Pro:18.04:LTS

    Versions
    • 1.0.7-1
    • 1.0.8-1
    • 1.0.9-1
    • 1.0.9-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: < 1.0.9-1ubuntu0.1~esm2

    Update to 1.0.9-1ubuntu0.1~esm2

  • php-phpseclib Ubuntu:Pro:20.04:LTS

    Versions
    • 2.0.21-2
    • 2.0.23-2
    • 2.0.23-2ubuntu0.1~esm2
    Affected ranges
    • ECOSYSTEM: < 2.0.23-2ubuntu0.1~esm3

    Update to 2.0.23-2ubuntu0.1~esm3

  • phpseclib Ubuntu:Pro:20.04:LTS

    Versions
    • 1.0.16-2
    • 1.0.18-2
    • 1.0.18-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: < 1.0.18-2ubuntu0.1~esm2

    Update to 1.0.18-2ubuntu0.1~esm2

  • phpseclib Ubuntu:22.04:LTS

    Versions
    • 1.0.19-3ubuntu2
    • 1.0.19-3ubuntu3
    • 1.0.20-1
    Affected ranges
    • ECOSYSTEM: < 1.0.20-1+deb12u3build0.22.04.1

    Update to 1.0.20-1+deb12u3build0.22.04.1

  • php-phpseclib Ubuntu:Pro:22.04:LTS

    Versions
    • 2.0.30-2ubuntu1
    • 2.0.34-1
    • 2.0.35-1
    • 2.0.36-1
    • 2.0.36-1ubuntu0.1~esm2
    Affected ranges
    • ECOSYSTEM: < 2.0.36-1ubuntu0.1~esm3

    Update to 2.0.36-1ubuntu0.1~esm3

  • php-phpseclib3 Ubuntu:Pro:22.04:LTS

    Versions
    • 3.0.9-1
    • 3.0.10-1
    • 3.0.12-2
    • 3.0.13-1
    • 3.0.13-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • php-phpseclib3 Ubuntu:24.04:LTS

    Versions
    • 3.0.21-2
    • 3.0.33-1
    • 3.0.34-1
    • 3.0.35-1
    • 3.0.37-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • php-phpseclib Ubuntu:Pro:24.04:LTS

    Versions
    • 2.0.44-1
    • 2.0.45-1
    • 2.0.46-1
    • 2.0.47-1
    Affected ranges
    • ECOSYSTEM: < 2.0.47-1ubuntu0.1~esm1

    Update to 2.0.47-1ubuntu0.1~esm1

  • phpseclib Ubuntu:Pro:24.04:LTS

    Versions
    • 1.0.21-2
    • 1.0.22-1
    • 1.0.23-1
    Affected ranges
    • ECOSYSTEM: < 1.0.23-1ubuntu0.1~esm1

    Update to 1.0.23-1ubuntu0.1~esm1

  • php-phpseclib Ubuntu:25.10

    Versions
    • 2.0.48-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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