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CVE-2026-111811

CVE-2026-111811 · Apache Traffic Server: tsmemcache plugin exposes the shared proxy cache over the network with no authentication

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

Apache Traffic Server's experimental tsmemcache plugin allows unauthenticated network read, write, and deletion of the shared proxy cache. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.

CVSS 9.4 · Critical · EPSS 0.4%

Published
Updated

Stack: system

Affected products and versions

  • apache traffic server

    Versions
    • ≥ 8.0.0, ≤ 8.1.11: Affected (semver)
    • ≥ 9.0.0, ≤ 9.2.15: Affected (semver)
    • ≥ 10.0.0, ≤ 10.1.4: Affected (semver)
    • 10.2.0: Affected (semver)

    No fix published

  • trafficserver Debian:12

    Versions
    • 9.2.0+ds-2
    • 9.2.0+ds-2+deb12u1
    • 9.2.1+ds-1
    • 9.2.2+ds-1
    • 9.2.3+ds-1
    • 9.2.3+ds-1+deb12u1
    • 9.2.4+ds-0+deb12u1
    • 9.2.4+ds-1
    • 9.2.4+ds-2
    • 9.2.5+ds-0+deb12u1
    • 9.2.5+ds-0+deb12u2
    • 9.2.5+ds-0+deb12u3
    • 9.2.5+ds-0+deb12u4
    • 9.2.5+ds-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • trafficserver Ubuntu:16.04:LTS

    Versions
    • 5.3.0-2ubuntu1
    • 5.3.0-2ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • trafficserver Ubuntu:18.04:LTS

    Versions
    • 7.0.0-5
    • 7.1.2+ds-2
    • 7.1.2+ds-2build1
    • 7.1.2+ds-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • trafficserver Ubuntu:Pro:20.04:LTS

    Versions
    • 8.0.5+ds-1
    • 8.0.5+ds-2
    • 8.0.5+ds-2build1
    • 8.0.5+ds-2ubuntu1
    • 8.0.5+ds-3
    • 8.0.5+ds-3ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • trafficserver Ubuntu:Pro:22.04:LTS

    Versions
    • 8.1.1+ds-1.1
    • 9.1.1+ds-2build1
    • 9.1.1+ds-2ubuntu0.1~esm1
    • 9.1.1+ds-2ubuntu0.1
    • 9.1.1+ds-2ubuntu0.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • trafficserver Ubuntu:24.04:LTS

    Versions
    • 9.2.1+ds-1build1
    • 9.2.2+ds-1
    • 9.2.3+ds-1
    • 9.2.3+ds-1+deb12u1
    • 9.2.3+ds-1+deb12u1build1
    • 9.2.3+ds-1+deb12u1build3
    • 9.2.3+ds-1+deb12u1build4
    • 9.2.3+ds-1+deb12u1ubuntu0.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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