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CVE-2025-26695

CVE-2025-26695 · Downloading of OpenPGP keys from WKD used incorrect padding

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

When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address. This vulnerability was fixed in Thunderbird 136 and Thunderbird 128.8.

CVSS 5.3 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • thunderbird

    Versions
    • ≥ 128.8, ≤ 128.*: Not affected (rpm)
    • ≥ 136: Not affected (rpm)

    No fix published

  • thunderbird Debian:12

    Versions
    • 1:102.11.0-1
    • 1:102.12.0-1
    • 1:102.12.0-1~deb10u1
    • 1:102.12.0-1~deb11u1
    • 1:102.12.0-1~deb12u1
    • 1:102.13.0-1
    • 1:102.13.0-1~deb10u1
    • 1:102.13.0-1~deb11u1
    • 1:102.13.0-1~deb12u1
    • 1:102.13.1-1
    • 1:102.13.1-1~deb10u1
    • 1:102.13.1-1~deb11u1
    • 1:102.13.1-1~deb12u1
    • 1:102.14.0-1~deb10u1
    • 1:102.14.0-1~deb11u1
    • 1:102.14.0-1~deb12u1
    • 1:102.15.0-1~deb10u1
    • 1:102.15.0-1~deb11u1
    • 1:102.15.0-1~deb12u1
    • 1:102.15.1-1~deb10u1
    • 1:102.15.1-1~deb11u1
    • 1:102.15.1-1~deb12u1
    • 1:103.0~b5-1
    • 1:104.0~b2-1
    • 1:110.0~b4-1
    • 1:112.0~b1-1
    • 1:113.0~b3-1
    • 1:114.0~b2-1
    • 1:115.0-1
    • 1:115.0.1-1
    • 1:115.0.1-2
    • 1:115.0~b4-1
    • 1:115.0~b6-1
    • 1:115.1.0-1
    • 1:115.1.1-1
    • 1:115.10.1-1
    • 1:115.10.1-1~deb10u1
    • 1:115.10.1-1~deb11u1
    • 1:115.10.1-1~deb12u1
    • 1:115.11.0-1
    • 1:115.11.0-1~deb10u1
    • 1:115.11.0-1~deb11u1
    • 1:115.11.0-1~deb12u1
    • 1:115.12.0-1
    • 1:115.12.0-1~deb10u1
    • 1:115.12.0-1~deb11u1
    • 1:115.12.0-1~deb12u1
    • 1:115.13.0-1
    • 1:115.13.0-1~deb11u1
    • 1:115.13.0-1~deb12u1
    • 1:115.14.0-1~deb11u1
    • 1:115.14.0-1~deb12u1
    • 1:115.15.0-1~deb11u1
    • 1:115.15.0-1~deb12u1
    • 1:115.16.0esr-1~deb11u1
    • 1:115.16.0esr-1~deb12u1
    • 1:115.2.0-1
    • 1:115.2.2-1
    • 1:115.3.0-1
    • 1:115.3.0-1~deb12u1
    • 1:115.3.1-1
    • 1:115.3.1-1~deb10u1
    • 1:115.3.1-1~deb11u1
    • 1:115.3.1-1~deb12u1
    • 1:115.4.1-1
    • 1:115.4.1-1~deb10u1
    • 1:115.4.1-1~deb11u1
    • 1:115.4.1-1~deb12u1
    • 1:115.5.0-1
    • 1:115.5.0-1~deb10u1
    • 1:115.5.0-1~deb11u1
    • 1:115.5.0-1~deb12u1
    • 1:115.5.1-1
    • 1:115.5.2-1
    • 1:115.6.0-1
    • 1:115.6.0-1~deb10u1
    • 1:115.6.0-1~deb11u1
    • 1:115.6.0-1~deb12u1
    • 1:115.7.0-1
    • 1:115.7.0-1~deb10u1
    • 1:115.7.0-1~deb11u1
    • 1:115.7.0-1~deb12u1
    • 1:115.8.0-1
    • 1:115.8.0-1~deb10u1
    • 1:115.8.0-1~deb11u1
    • 1:115.8.0-1~deb12u1
    • 1:115.8.1-1
    • 1:115.9.0-1
    • 1:115.9.0-1~deb10u1
    • 1:115.9.0-1~deb11u1
    • 1:115.9.0-1~deb12u1
    • 1:116.0~b7-1
    • 1:117.0~b5-1
    • 1:120.0~b1-1
    • 1:121.0~b3-1
    • 1:122.0~b2-1
    • 1:124.0~b5-1
    • 1:125.0~b3-1
    • 1:127.0~b5-1
    • 1:128.0esr-1
    • 1:128.0~b5-1
    • 1:128.1.0esr-1
    • 1:128.1.1esr-1
    • 1:128.2.0esr-1
    • 1:128.2.1esr-1
    • 1:128.2.3esr-1
    • 1:128.3.0esr-1
    • 1:128.3.2esr-1
    • 1:128.4.0esr-1
    • 1:128.4.0esr-1~deb11u1
    • 1:128.4.0esr-1~deb12u1
    • 1:128.4.2esr-1
    • 1:128.4.3esr-1
    • 1:128.4.3esr-1~deb11u1
    • 1:128.4.3esr-1~deb12u1
    • 1:128.5.0esr-1
    • 1:128.5.0esr-1~deb11u1
    • 1:128.5.0esr-1~deb12u1
    • 1:128.5.2esr-1
    • 1:128.6.0esr-1
    • 1:128.6.0esr-1~deb11u1
    • 1:128.6.0esr-1~deb12u1
    • 1:128.7.0esr-1
    • 1:128.7.0esr-1~deb11u1
    • 1:128.7.0esr-1~deb12u1
    • 1:128.8.0esr-1~deb11u1
    Affected ranges
    • ECOSYSTEM: < 1:128.8.0esr-1~deb12u1

    Update to 1:128.8.0esr-1~deb12u1

  • thunderbird Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:128.8.0esr-1

    Update to 1:128.8.0esr-1

  • thunderbird Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:128.8.0esr-1

    Update to 1:128.8.0esr-1

  • thunderbird Ubuntu:22.04:LTS

    Versions
    • 1:91.1.2+build1-0ubuntu1
    • 1:91.3.0+build2-0ubuntu1
    • 1:91.3.1+build1-0ubuntu1
    • 1:91.3.2+build1-0ubuntu1
    • 1:91.4.0+build1.1-0ubuntu1
    • 1:91.4.0+build2-0ubuntu1
    • 1:91.5.0+build1-0ubuntu1
    • 1:91.5.1+build1-0ubuntu1
    • 1:91.6.1+build1-0ubuntu1
    • 1:91.7.0+build1-0ubuntu1
    • 1:91.7.0+build2-0ubuntu1
    • 1:91.8.0+build2-0ubuntu1
    • 1:91.9.1+build1-0ubuntu0.22.04.1
    • 1:91.11.0+build2-0ubuntu0.22.04.1
    • 1:102.2.2+build1-0ubuntu0.22.04.1
    • 1:102.4.2+build2-0ubuntu0.22.04.1
    • 1:102.7.1+build2-0ubuntu0.22.04.1
    • 1:102.8.0+build2-0ubuntu0.22.04.1
    • 1:102.9.0+build1-0ubuntu0.22.04.1
    • 1:102.10.0+build2-0ubuntu0.22.04.1
    • 1:102.11.0+build1-0ubuntu0.22.04.1
    • 1:102.13.0+build1-0ubuntu0.22.04.1
    • 1:102.15.0+build1-0ubuntu0.22.04.1
    • 1:102.15.1+build1-0ubuntu0.22.04.1
    • 1:115.3.1+build1-0ubuntu0.22.04.2
    • 1:115.4.1+build1-0ubuntu0.22.04.1
    • 1:115.5.0+build1-0ubuntu0.22.04.1
    • 1:115.6.0+build2-0ubuntu0.22.04.1
    • 1:115.8.1+build1-0ubuntu0.22.04.1
    • 1:115.9.0+build1-0ubuntu0.22.04.1
    • 1:115.10.1+build1-0ubuntu0.22.04.1
    • 1:115.11.0+build2-0ubuntu0.22.04.1
    • 1:115.12.0+build3-0ubuntu0.22.04.1
    • 1:115.13.0+build5-0ubuntu0.22.04.1
    • 1:115.15.0+build1-0ubuntu0.22.04.1
    • 1:115.16.0+build2-0ubuntu0.22.04.1
    • 1:115.18.0+build1-0ubuntu0.22.04.1
    Affected ranges
    • ECOSYSTEM: < 1:128.12.0+build1-0ubuntu0.22.04.1

    Update to 1:128.12.0+build1-0ubuntu0.22.04.1

Original sources

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