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CVE-2026-101356

CVE-2026-101356 · Apache Tomcat: HTTP/2 request/response mix-up after error during async processing

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.

Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users. This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 through 9.0.122. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fixes the issue.

CVSS 9.1 · Critical · EPSS 0.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • apache tomcat

    Versions
    • ≥ 11.0.22, ≤ 11.0.26: Affected (semver)
    • ≥ 10.1.55, ≤ 10.1.60: Affected (semver)
    • ≥ 9.0.118, ≤ 9.0.122: Affected (semver)

    No fix published

  • tomcat10 Debian:12

    Versions
    • 10.1.10-1
    • 10.1.13-1
    • 10.1.14-1
    • 10.1.15-1
    • 10.1.16-1
    • 10.1.20-1
    • 10.1.23-1
    • 10.1.25-1
    • 10.1.25-1~bpo12+1
    • 10.1.25-2
    • 10.1.30-1
    • 10.1.30-1~bpo12+1
    • 10.1.31-1
    • 10.1.33-1
    • 10.1.33-1~bpo12+1
    • 10.1.34-0+deb12u1
    • 10.1.34-0+deb12u2
    • 10.1.34-1
    • 10.1.35-1
    • 10.1.40-1
    • 10.1.40-1~bpo12+1
    • 10.1.46-1
    • 10.1.52-1
    • 10.1.52-1~deb12u1
    • 10.1.52-1~deb13u1
    • 10.1.52-2
    • 10.1.54-1
    • 10.1.55-1
    • 10.1.55-1~deb12u1
    • 10.1.55-1~deb13u1
    • 10.1.6-1
    • 10.1.6-1+deb12u1
    • 10.1.6-1+deb12u2
    • 10.1.60-1
    • 10.1.7-1
    • 10.1.8-1
    • 10.1.9-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat10 Debian:13

    Versions
    • 10.1.40-1
    • 10.1.46-1
    • 10.1.52-1
    • 10.1.52-1~deb12u1
    • 10.1.52-1~deb13u1
    • 10.1.52-2
    • 10.1.54-1
    • 10.1.55-1
    • 10.1.55-1~deb12u1
    • 10.1.55-1~deb13u1
    • 10.1.60-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat10 Debian:14

    Versions
    • 10.1.40-1
    • 10.1.46-1
    • 10.1.52-1
    • 10.1.52-1~deb12u1
    • 10.1.52-1~deb13u1
    • 10.1.52-2
    • 10.1.54-1
    • 10.1.55-1
    • 10.1.55-1~deb12u1
    • 10.1.55-1~deb13u1
    • 10.1.60-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat11 Debian:13

    Versions
    • 11.0.11-1
    • 11.0.15-1
    • 11.0.15-1~deb13u1
    • 11.0.18-1
    • 11.0.21-1
    • 11.0.22-1
    • 11.0.22-1~deb13u1
    • 11.0.22-2
    • 11.0.24-1
    • 11.0.6-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat11 Debian:14

    Versions
    • 11.0.11-1
    • 11.0.15-1
    • 11.0.15-1~deb13u1
    • 11.0.18-1
    • 11.0.21-1
    • 11.0.22-1
    • 11.0.22-1~deb13u1
    • 11.0.22-2
    • 11.0.24-1
    • 11.0.6-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat9 Debian:12

    Affected ranges
    • ECOSYSTEM: < 9.0.70-2

    Update to 9.0.70-2

  • tomcat9 Debian:13

    Affected ranges
    • ECOSYSTEM: < 9.0.70-2

    Update to 9.0.70-2

  • tomcat9 Debian:14

    Affected ranges
    • ECOSYSTEM: < 9.0.70-2

    Update to 9.0.70-2

  • tomcat6 Ubuntu:Pro:14.04:LTS

    Versions
    • 6.0.37-1
    • 6.0.39-1
    • 6.0.39-1ubuntu0.1
    • 6.0.39-1ubuntu0.1+esm1
    • 6.0.39-1ubuntu0.1+esm2
    • 6.0.39-1ubuntu0.1+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat7 Ubuntu:Pro:14.04:LTS

    Versions
    • 7.0.42-1
    • 7.0.47-1
    • 7.0.50-1
    • 7.0.52-1
    • 7.0.52-1ubuntu0.1
    • 7.0.52-1ubuntu0.3
    • 7.0.52-1ubuntu0.6
    • 7.0.52-1ubuntu0.7
    • 7.0.52-1ubuntu0.8
    • 7.0.52-1ubuntu0.9
    • 7.0.52-1ubuntu0.10
    • 7.0.52-1ubuntu0.11
    • 7.0.52-1ubuntu0.13
    • 7.0.52-1ubuntu0.14
    • 7.0.52-1ubuntu0.15
    • 7.0.52-1ubuntu0.16
    • 7.0.52-1ubuntu0.16+esm1
    • 7.0.52-1ubuntu0.16+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat8 Ubuntu:Pro:16.04:LTS

    Versions
    • 8.0.26-1
    • 8.0.28-1
    • 8.0.30-1
    • 8.0.32-1
    • 8.0.32-1ubuntu1
    • 8.0.32-1ubuntu1.1
    • 8.0.32-1ubuntu1.2
    • 8.0.32-1ubuntu1.3
    • 8.0.32-1ubuntu1.4
    • 8.0.32-1ubuntu1.5
    • 8.0.32-1ubuntu1.6
    • 8.0.32-1ubuntu1.7
    • 8.0.32-1ubuntu1.8
    • 8.0.32-1ubuntu1.9
    • 8.0.32-1ubuntu1.10
    • 8.0.32-1ubuntu1.11
    • 8.0.32-1ubuntu1.13
    • 8.0.32-1ubuntu1.13+esm1
    • 8.0.32-1ubuntu1.13+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat7 Ubuntu:Pro:16.04:LTS

    Versions
    • 7.0.64-1
    • 7.0.68-1
    • 7.0.68-1ubuntu0.1
    • 7.0.68-1ubuntu0.3
    • 7.0.68-1ubuntu0.4
    • 7.0.68-1ubuntu0.4+esm1
    • 7.0.68-1ubuntu0.4+esm2
    • 7.0.68-1ubuntu0.4+esm3
    • 7.0.68-1ubuntu0.4+esm4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat8 Ubuntu:Pro:18.04:LTS

    Versions
    • 8.5.21-1ubuntu1
    • 8.5.29-1
    • 8.5.30-1
    • 8.5.30-1ubuntu1
    • 8.5.30-1ubuntu1.2
    • 8.5.30-1ubuntu1.3
    • 8.5.30-1ubuntu1.4
    • 8.5.39-1ubuntu1~18.04.1
    • 8.5.39-1ubuntu1~18.04.2
    • 8.5.39-1ubuntu1~18.04.3
    • 8.5.39-1ubuntu1~18.04.3+esm1
    • 8.5.39-1ubuntu1~18.04.3+esm2
    • 8.5.39-1ubuntu1~18.04.3+esm3
    • 8.5.39-1ubuntu1~18.04.3+esm4
    • 8.5.39-1ubuntu1~18.04.3+esm5
    • 8.5.39-1ubuntu1~18.04.3+esm6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat9 Ubuntu:Pro:18.04:LTS

    Versions
    • 9.0.16-3~18.04.1
    • 9.0.16-3ubuntu0.18.04.1
    • 9.0.16-3ubuntu0.18.04.2
    • 9.0.16-3ubuntu0.18.04.2+esm1
    • 9.0.16-3ubuntu0.18.04.2+esm2
    • 9.0.16-3ubuntu0.18.04.2+esm3
    • 9.0.16-3ubuntu0.18.04.2+esm4
    • 9.0.16-3ubuntu0.18.04.2+esm5
    • 9.0.16-3ubuntu0.18.04.2+esm6
    • 9.0.16-3ubuntu0.18.04.2+esm7
    • 9.0.16-3ubuntu0.18.04.2+esm8
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat9 Ubuntu:Pro:20.04:LTS

    Versions
    • 9.0.24-1
    • 9.0.27-1
    • 9.0.31-1
    • 9.0.31-1ubuntu0.1
    • 9.0.31-1ubuntu0.2
    • 9.0.31-1ubuntu0.3
    • 9.0.31-1ubuntu0.4
    • 9.0.31-1ubuntu0.5
    • 9.0.31-1ubuntu0.6
    • 9.0.31-1ubuntu0.7
    • 9.0.31-1ubuntu0.8
    • 9.0.31-1ubuntu0.9
    • 9.0.31-1ubuntu0.9+esm1
    • 9.0.31-1ubuntu0.9+esm2
    • 9.0.31-1ubuntu0.9+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat9 Ubuntu:Pro:22.04:LTS

    Versions
    • 9.0.43-3
    • 9.0.54-1
    • 9.0.55-1
    • 9.0.58-1
    • 9.0.58-1ubuntu0.1
    • 9.0.58-1ubuntu0.1+esm1
    • 9.0.58-1ubuntu0.1+esm2
    • 9.0.58-1ubuntu0.1+esm3
    • 9.0.58-1ubuntu0.1+esm4
    • 9.0.58-1ubuntu0.2
    • 9.0.58-1ubuntu0.2+esm1
    • 9.0.58-1ubuntu0.2+esm2
    • 9.0.58-1ubuntu0.2+esm3
    • 9.0.58-1ubuntu0.2+esm4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat10 Ubuntu:24.04:LTS

    Versions
    • 10.1.10-1
    • 10.1.14-1
    • 10.1.15-1
    • 10.1.16-1
    • 10.1.16-1ubuntu0.1~esm1
    • 10.1.16-1ubuntu0.1~esm2
    • 10.1.16-1ubuntu0.1~esm3
    • 10.1.16-1ubuntu0.1~esm4
    • 10.1.55-1ubuntu2~24.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat9 Ubuntu:24.04:LTS

    Versions
    • 9.0.70-1ubuntu1
    • 9.0.70-2
    • 9.0.70-2ubuntu0.1
    • 9.0.70-2ubuntu0.1+esm1
    • 9.0.70-2ubuntu0.1+esm2
    • 9.0.70-2ubuntu0.1+esm3
    • 9.0.118-1~24.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat10 Ubuntu:26.10

    Versions
    • 10.1.40-1ubuntu1
    • 10.1.54-1
    • 10.1.54-1ubuntu1
    • 10.1.54-1ubuntu2
    • 10.1.55-1ubuntu1
    • 10.1.55-1ubuntu2
    • 10.1.57~us1-0ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat11 Ubuntu:26.10

    Versions
    • 11.0.18-1
    • 11.0.22-2
    • 11.0.22-2ubuntu1
    • 11.0.22-2ubuntu2
    • 11.0.24-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat9 Ubuntu:26.10

    Versions
    • 9.0.115-1
    • 9.0.115-1ubuntu1
    • 9.0.118-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat10 Ubuntu:26.04:LTS

    Versions
    • 10.1.40-1ubuntu1
    • 10.1.40-1ubuntu1.26.04.1
    • 10.1.55-1ubuntu2~26.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tomcat9 Ubuntu:26.04:LTS

    Versions
    • 9.0.95-1ubuntu1
    • 9.0.111-1
    • 9.0.115-1
    • 9.0.115-1ubuntu0.1
    • 9.0.118-1~26.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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