# CVE-2026-55276: jws7-tomcat: Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special roles and empty author...

CVE-2026-55276 is fixed in 35 products on 1 platform, first by RHSA-2026:67163, released May 27, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-55276
- Priority: High
- CVSS: 9.1 (low)
- EPSS: 0.0061
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 29, 2026

## Description

Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special roles and empty authorisation constraints were not included when the effective web.xml was logged. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119 which fixes the issue.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | jws6-tomcat RHEL 10 | 10.1.49-16.redhat_00016.1.el10jws | [RHSA-2026:73981](https://patchblox.com/security/data/fix/linux/rhsa-2026-73981.md) | Aug 25, 2026 |
| Linux | jws7-tomcat RHEL 10 | 11.0.21-6.redhat_00005.1.el10jws | [RHSA-2026:49951](https://patchblox.com/security/data/fix/linux/rhsa-2026-49951.md) | Aug 6, 2026 |
| Linux | libtomcat8-embed-java Ubuntu 18.04.6 LTS (bionic) | 8.5.39-1ubuntu1~18.04.3+esm6 | [libtomcat8-embed-java 8.5.39-1ubuntu1~18.04.3+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libtomcat8-embed-java-8.5.39-1ubuntu1-18.04.3-esm6.md) | Jul 18, 2026 |
| Linux | libtomcat8-java Ubuntu 18.04.6 LTS (bionic) | 8.5.39-1ubuntu1~18.04.3+esm6 | [libtomcat8-java 8.5.39-1ubuntu1~18.04.3+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libtomcat8-java-8.5.39-1ubuntu1-18.04.3-esm6.md) | Jul 18, 2026 |
| Linux | tomcat RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 |
| Linux | tomcat RHEL 9 | 1:9.0.120-2.el9_8 | [RHSA-2026:68660](https://patchblox.com/security/data/fix/linux/rhsa-2026-68660.md) | Sep 19, 2026 |
| Linux | tomcat almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 |
| Linux | tomcat almalinux 9 | 1:9.0.120-2.el9_8 | [ALSA-2026:68660](https://patchblox.com/security/data/fix/linux/alsa-2026-68660.md) | Sep 17, 2026 |
| Linux | tomcat opensuse-leap 16.0 | 9.0.119-160000.1.1 | [OPENSUSE-SU-2026:21327-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21327-1.md) | Jul 13, 2026 |
| Linux | tomcat sles 15.7 | 9.0.119-150200.111.1 | [SUSE-SU-2026:3088-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3088-1.md) | Jul 16, 2026 |
| Linux | tomcat sles 16.0 | 9.0.119-160000.1.1 | [SUSE-SU-2026:22646-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22646-1.md) | Jul 13, 2026 |
| Linux | tomcat-admin-webapps RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 |
| Linux | tomcat-admin-webapps RHEL 9 | 1:9.0.120-2.el9_8 | [RHSA-2026:68660](https://patchblox.com/security/data/fix/linux/rhsa-2026-68660.md) | Sep 19, 2026 |
| Linux | tomcat-admin-webapps almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 |
| Linux | tomcat-admin-webapps almalinux 9 | 1:9.0.120-2.el9_8 | [ALSA-2026:68660](https://patchblox.com/security/data/fix/linux/alsa-2026-68660.md) | Sep 17, 2026 |
| Linux | tomcat-docs-webapp RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 |
| Linux | tomcat-docs-webapp RHEL 9 | 1:9.0.120-2.el9_8 | [RHSA-2026:68660](https://patchblox.com/security/data/fix/linux/rhsa-2026-68660.md) | Sep 19, 2026 |
| Linux | tomcat-docs-webapp almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 |
| Linux | tomcat-docs-webapp almalinux 9 | 1:9.0.120-2.el9_8 | [ALSA-2026:68660](https://patchblox.com/security/data/fix/linux/alsa-2026-68660.md) | Sep 17, 2026 |
| Linux | tomcat-el-3.0-api RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 |
| Linux | tomcat-el-3.0-api RHEL 9 | 1:9.0.120-2.el9_8 | [RHSA-2026:68660](https://patchblox.com/security/data/fix/linux/rhsa-2026-68660.md) | Sep 19, 2026 |
| Linux | tomcat-el-3.0-api almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 |
| Linux | tomcat-el-3.0-api almalinux 9 | 1:9.0.120-2.el9_8 | [ALSA-2026:68660](https://patchblox.com/security/data/fix/linux/alsa-2026-68660.md) | Sep 17, 2026 |
| Linux | tomcat-jsp-2.3-api RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 |
| Linux | tomcat-jsp-2.3-api RHEL 9 | 1:9.0.120-2.el9_8 | [RHSA-2026:68660](https://patchblox.com/security/data/fix/linux/rhsa-2026-68660.md) | Sep 19, 2026 |
| Linux | tomcat-jsp-2.3-api almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 |
| Linux | tomcat-jsp-2.3-api almalinux 9 | 1:9.0.120-2.el9_8 | [ALSA-2026:68660](https://patchblox.com/security/data/fix/linux/alsa-2026-68660.md) | Sep 17, 2026 |
| Linux | tomcat-lib RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 |
| Linux | tomcat-lib RHEL 9 | 1:9.0.120-2.el9_8 | [RHSA-2026:68660](https://patchblox.com/security/data/fix/linux/rhsa-2026-68660.md) | Sep 19, 2026 |
| Linux | tomcat-lib almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 |
| Linux | tomcat-lib almalinux 9 | 1:9.0.120-2.el9_8 | [ALSA-2026:68660](https://patchblox.com/security/data/fix/linux/alsa-2026-68660.md) | Sep 17, 2026 |
| Linux | tomcat-servlet-4.0-api RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 |
| Linux | tomcat-servlet-4.0-api RHEL 9 | 1:9.0.120-2.el9_8 | [RHSA-2026:68660](https://patchblox.com/security/data/fix/linux/rhsa-2026-68660.md) | Sep 19, 2026 |
| Linux | tomcat-servlet-4.0-api almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 |
| Linux | tomcat-servlet-4.0-api almalinux 9 | 1:9.0.120-2.el9_8 | [ALSA-2026:68660](https://patchblox.com/security/data/fix/linux/alsa-2026-68660.md) | Sep 17, 2026 |
| Linux | tomcat-webapps RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 |
| Linux | tomcat-webapps RHEL 9 | 1:9.0.120-2.el9_8 | [RHSA-2026:68660](https://patchblox.com/security/data/fix/linux/rhsa-2026-68660.md) | Sep 19, 2026 |
| Linux | tomcat-webapps almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 |
| Linux | tomcat-webapps almalinux 9 | 1:9.0.120-2.el9_8 | [ALSA-2026:68660](https://patchblox.com/security/data/fix/linux/alsa-2026-68660.md) | Sep 17, 2026 |
| Linux | tomcat10 Debian 14 | 10.1.60-1 | [DEBIAN-CVE-2026-55276](https://patchblox.com/security/data/fix/linux/debian-cve-2026-55276.md) | Jun 30, 2026 |
| Linux | tomcat10 amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | [ALAS2023-2026-1946](https://patchblox.com/security/data/fix/linux/alas2023-2026-1946.md) | Jul 20, 2026 |
| Linux | tomcat10 opensuse-leap 16.0 | 10.1.56-160000.1.1 | [OPENSUSE-SU-2026:21328-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21328-1.md) | Jul 13, 2026 |
| Linux | tomcat10 sles 15.7 | 10.1.56-150200.5.70.1 | [SUSE-SU-2026:3112-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3112-1.md) | Jul 17, 2026 |
| Linux | tomcat10 sles 16.0 | 10.1.56-160000.1.1 | [SUSE-SU-2026:22647-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22647-1.md) | Jul 13, 2026 |
| Linux | tomcat10-admin-webapps amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | [ALAS2023-2026-1946](https://patchblox.com/security/data/fix/linux/alas2023-2026-1946.md) | Jul 20, 2026 |
| Linux | tomcat10-docs-webapp amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | [ALAS2023-2026-1946](https://patchblox.com/security/data/fix/linux/alas2023-2026-1946.md) | Jul 20, 2026 |
| Linux | tomcat10-el-5.0-api amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | [ALAS2023-2026-1946](https://patchblox.com/security/data/fix/linux/alas2023-2026-1946.md) | Jul 20, 2026 |
| Linux | tomcat10-jsp-3.1-api amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | [ALAS2023-2026-1946](https://patchblox.com/security/data/fix/linux/alas2023-2026-1946.md) | Jul 20, 2026 |
| Linux | tomcat10-lib amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | [ALAS2023-2026-1946](https://patchblox.com/security/data/fix/linux/alas2023-2026-1946.md) | Jul 20, 2026 |
| Linux | tomcat10-servlet-6.0-api amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | [ALAS2023-2026-1946](https://patchblox.com/security/data/fix/linux/alas2023-2026-1946.md) | Jul 20, 2026 |
| Linux | tomcat10-webapps amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | [ALAS2023-2026-1946](https://patchblox.com/security/data/fix/linux/alas2023-2026-1946.md) | Jul 20, 2026 |
| Linux | tomcat11 Debian 14 | 11.0.24-1 | [DEBIAN-CVE-2026-55276](https://patchblox.com/security/data/fix/linux/debian-cve-2026-55276.md) | Jun 30, 2026 |
| Linux | tomcat11 opensuse-leap 16.0 | 11.0.23-160000.1.1 | [OPENSUSE-SU-2026:21329-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21329-1.md) | Jul 13, 2026 |
| Linux | tomcat11 sles 15.7 | 11.0.23-150600.13.24.1 | [SUSE-SU-2026:3087-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3087-1.md) | Jul 16, 2026 |
| Linux | tomcat11 sles 16.0 | 11.0.23-160000.1.1 | [SUSE-SU-2026:22648-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22648-1.md) | Jul 13, 2026 |
| Linux | tomcat8 Ubuntu 18.04.6 LTS (bionic) | 8.5.39-1ubuntu1~18.04.3+esm6 | [tomcat8 8.5.39-1ubuntu1~18.04.3+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tomcat8-8.5.39-1ubuntu1-18.04.3-esm6.md) | Jul 18, 2026 |
| Linux | tomcat8-admin Ubuntu 18.04.6 LTS (bionic) | 8.5.39-1ubuntu1~18.04.3+esm6 | [tomcat8-admin 8.5.39-1ubuntu1~18.04.3+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tomcat8-admin-8.5.39-1ubuntu1-18.04.3-esm6.md) | Jul 18, 2026 |
| Linux | tomcat8-common Ubuntu 18.04.6 LTS (bionic) | 8.5.39-1ubuntu1~18.04.3+esm6 | [tomcat8-common 8.5.39-1ubuntu1~18.04.3+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tomcat8-common-8.5.39-1ubuntu1-18.04.3-esm6.md) | Jul 18, 2026 |
| Linux | tomcat8-docs Ubuntu 18.04.6 LTS (bionic) | 8.5.39-1ubuntu1~18.04.3+esm6 | [tomcat8-docs 8.5.39-1ubuntu1~18.04.3+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tomcat8-docs-8.5.39-1ubuntu1-18.04.3-esm6.md) | Jul 21, 2026 |
| Linux | tomcat8-examples Ubuntu 18.04.6 LTS (bionic) | 8.5.39-1ubuntu1~18.04.3+esm6 | [tomcat8-examples 8.5.39-1ubuntu1~18.04.3+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tomcat8-examples-8.5.39-1ubuntu1-18.04.3-esm6.md) | Jul 18, 2026 |
| Linux | tomcat8-user Ubuntu 18.04.6 LTS (bionic) | 8.5.39-1ubuntu1~18.04.3+esm6 | [tomcat8-user 8.5.39-1ubuntu1~18.04.3+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-tomcat8-user-8.5.39-1ubuntu1-18.04.3-esm6.md) | Jul 18, 2026 |
| Linux | tomcat9 Debian 12.15 (bookworm) | 9.0.70-2 | [DEBIAN-CVE-2026-55276](https://patchblox.com/security/data/fix/linux/debian-cve-2026-55276.md) | Jun 30, 2026 |
| Linux | tomcat9 Debian 13.5 (trixie) | 9.0.70-2 | [DEBIAN-CVE-2026-55276](https://patchblox.com/security/data/fix/linux/debian-cve-2026-55276.md) | Jun 30, 2026 |
| Linux | tomcat9 Debian 14 | 9.0.70-2 | [DEBIAN-CVE-2026-55276](https://patchblox.com/security/data/fix/linux/debian-cve-2026-55276.md) | Jun 30, 2026 |
| Linux | tomcat9 RHEL 10 | 9.0.120-1.el10_0 | [RHSA-2026:67163](https://patchblox.com/security/data/fix/linux/rhsa-2026-67163.md) | May 27, 2026 |
| Linux | tomcat9 almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | [ALSA-2026:68651](https://patchblox.com/security/data/fix/linux/alsa-2026-68651.md) | Sep 17, 2026 |
| Linux | tomcat9 amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | [ALAS2023-2026-1945](https://patchblox.com/security/data/fix/linux/alas2023-2026-1945.md) | Jul 20, 2026 |
| Linux | tomcat9-admin-webapps almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | [ALSA-2026:68651](https://patchblox.com/security/data/fix/linux/alsa-2026-68651.md) | Sep 17, 2026 |
| Linux | tomcat9-admin-webapps amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | [ALAS2023-2026-1945](https://patchblox.com/security/data/fix/linux/alas2023-2026-1945.md) | Jul 20, 2026 |
| Linux | tomcat9-docs-webapp almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | [ALSA-2026:68651](https://patchblox.com/security/data/fix/linux/alsa-2026-68651.md) | Sep 17, 2026 |
| Linux | tomcat9-docs-webapp amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | [ALAS2023-2026-1945](https://patchblox.com/security/data/fix/linux/alas2023-2026-1945.md) | Jul 20, 2026 |
| Linux | tomcat9-el-3.0-api almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | [ALSA-2026:68651](https://patchblox.com/security/data/fix/linux/alsa-2026-68651.md) | Sep 17, 2026 |
| Linux | tomcat9-el-3.0-api amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | [ALAS2023-2026-1945](https://patchblox.com/security/data/fix/linux/alas2023-2026-1945.md) | Jul 20, 2026 |
| Linux | tomcat9-jsp-2.3-api almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | [ALSA-2026:68651](https://patchblox.com/security/data/fix/linux/alsa-2026-68651.md) | Sep 17, 2026 |
| Linux | tomcat9-jsp-2.3-api amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | [ALAS2023-2026-1945](https://patchblox.com/security/data/fix/linux/alas2023-2026-1945.md) | Jul 20, 2026 |
| Linux | tomcat9-lib almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | [ALSA-2026:68651](https://patchblox.com/security/data/fix/linux/alsa-2026-68651.md) | Sep 17, 2026 |
| Linux | tomcat9-lib amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | [ALAS2023-2026-1945](https://patchblox.com/security/data/fix/linux/alas2023-2026-1945.md) | Jul 20, 2026 |
| Linux | tomcat9-servlet-4.0-api almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | [ALSA-2026:68651](https://patchblox.com/security/data/fix/linux/alsa-2026-68651.md) | Sep 17, 2026 |
| Linux | tomcat9-servlet-4.0-api amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | [ALAS2023-2026-1945](https://patchblox.com/security/data/fix/linux/alas2023-2026-1945.md) | Jul 20, 2026 |
| Linux | tomcat9-webapps almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | [ALSA-2026:68651](https://patchblox.com/security/data/fix/linux/alsa-2026-68651.md) | Sep 17, 2026 |
| Linux | tomcat9-webapps amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | [ALAS2023-2026-1945](https://patchblox.com/security/data/fix/linux/alas2023-2026-1945.md) | Jul 20, 2026 |

---

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