CVE-2026-55956
jws6-tomcat: Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet...
CVE-2026-55956 is fixed in 27 products on 1 platform, first by RHSA-2026:67163, released May 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
6.5
moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0070
53rd percentile
Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint. 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, from 7.0.0 through 7.0.109. 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 fix the issue.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| jws6-tomcat · RHEL 10 | 10.1.49-15.redhat_00013.1.el10jws | RHSA-2026:43401 | Jul 23, 2026 |
| jws7-tomcat · RHEL 10 | 11.0.21-5.redhat_00004.1.el10jws | RHSA-2026:39188 | Jul 18, 2026 |
| tomcat · RHEL 8 | 1:9.0.120-1.el8_10 | RHSA-2026:68677 | Sep 19, 2026 |
| tomcat · RHEL 9 | 1:9.0.120-2.el9_8 | RHSA-2026:68660 | Sep 19, 2026 |
| tomcat · almalinux 8 | 1:9.0.120-1.el8_10 | ALSA-2026:68677 | Sep 17, 2026 |
| tomcat · almalinux 9 | 1:9.0.120-2.el9_8 | ALSA-2026:68660 | Sep 17, 2026 |
| tomcat · opensuse-leap 16.0 | 9.0.119-160000.1.1 | OPENSUSE-SU-2026:21327-1 | Jul 13, 2026 |
| tomcat · sles 15.7 | 9.0.119-150200.111.1 | SUSE-SU-2026:3088-1 | Jul 16, 2026 |
| tomcat · sles 16.0 | 9.0.119-160000.1.1 | SUSE-SU-2026:22646-1 | Jul 13, 2026 |
| tomcat-admin-webapps · RHEL 8 | 1:9.0.120-1.el8_10 | RHSA-2026:68677 | Sep 19, 2026 |
| tomcat-admin-webapps · RHEL 9 | 1:9.0.120-2.el9_8 | RHSA-2026:68660 | Sep 19, 2026 |
| tomcat-admin-webapps · almalinux 8 | 1:9.0.120-1.el8_10 | ALSA-2026:68677 | Sep 17, 2026 |
| tomcat-admin-webapps · almalinux 9 | 1:9.0.120-2.el9_8 | ALSA-2026:68660 | Sep 17, 2026 |
| tomcat-docs-webapp · RHEL 8 | 1:9.0.120-1.el8_10 | RHSA-2026:68677 | Sep 19, 2026 |
| tomcat-docs-webapp · RHEL 9 | 1:9.0.120-2.el9_8 | RHSA-2026:68660 | Sep 19, 2026 |
| tomcat-docs-webapp · almalinux 8 | 1:9.0.120-1.el8_10 | ALSA-2026:68677 | Sep 17, 2026 |
| tomcat-docs-webapp · almalinux 9 | 1:9.0.120-2.el9_8 | ALSA-2026:68660 | Sep 17, 2026 |
| tomcat-el-3.0-api · RHEL 8 | 1:9.0.120-1.el8_10 | RHSA-2026:68677 | Sep 19, 2026 |
| tomcat-el-3.0-api · RHEL 9 | 1:9.0.120-2.el9_8 | RHSA-2026:68660 | Sep 19, 2026 |
| tomcat-el-3.0-api · almalinux 8 | 1:9.0.120-1.el8_10 | ALSA-2026:68677 | Sep 17, 2026 |
| tomcat-el-3.0-api · almalinux 9 | 1:9.0.120-2.el9_8 | ALSA-2026:68660 | Sep 17, 2026 |
| tomcat-jsp-2.3-api · RHEL 8 | 1:9.0.120-1.el8_10 | RHSA-2026:68677 | Sep 19, 2026 |
| tomcat-jsp-2.3-api · RHEL 9 | 1:9.0.120-2.el9_8 | RHSA-2026:68660 | Sep 19, 2026 |
| tomcat-jsp-2.3-api · almalinux 8 | 1:9.0.120-1.el8_10 | ALSA-2026:68677 | Sep 17, 2026 |
| tomcat-jsp-2.3-api · almalinux 9 | 1:9.0.120-2.el9_8 | ALSA-2026:68660 | Sep 17, 2026 |
| tomcat-lib · RHEL 8 | 1:9.0.120-1.el8_10 | RHSA-2026:68677 | Sep 19, 2026 |
| tomcat-lib · RHEL 9 | 1:9.0.120-2.el9_8 | RHSA-2026:68660 | Sep 19, 2026 |
| tomcat-lib · almalinux 8 | 1:9.0.120-1.el8_10 | ALSA-2026:68677 | Sep 17, 2026 |
| tomcat-lib · almalinux 9 | 1:9.0.120-2.el9_8 | ALSA-2026:68660 | Sep 17, 2026 |
| tomcat-servlet-4.0-api · RHEL 8 | 1:9.0.120-1.el8_10 | RHSA-2026:68677 | Sep 19, 2026 |
| tomcat-servlet-4.0-api · RHEL 9 | 1:9.0.120-2.el9_8 | RHSA-2026:68660 | Sep 19, 2026 |
| tomcat-servlet-4.0-api · almalinux 8 | 1:9.0.120-1.el8_10 | ALSA-2026:68677 | Sep 17, 2026 |
| tomcat-servlet-4.0-api · almalinux 9 | 1:9.0.120-2.el9_8 | ALSA-2026:68660 | Sep 17, 2026 |
| tomcat-webapps · RHEL 8 | 1:9.0.120-1.el8_10 | RHSA-2026:68677 | Sep 19, 2026 |
| tomcat-webapps · RHEL 9 | 1:9.0.120-2.el9_8 | RHSA-2026:68660 | Sep 19, 2026 |
| tomcat-webapps · almalinux 8 | 1:9.0.120-1.el8_10 | ALSA-2026:68677 | Sep 17, 2026 |
| tomcat-webapps · almalinux 9 | 1:9.0.120-2.el9_8 | ALSA-2026:68660 | Sep 17, 2026 |
| tomcat10 · Debian 14 | 10.1.60-1 | DEBIAN-CVE-2026-55956 | Jun 30, 2026 |
| tomcat10 · amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | ALAS2023-2026-1946 | Jul 20, 2026 |
| tomcat10 · opensuse-leap 16.0 | 10.1.56-160000.1.1 | OPENSUSE-SU-2026:21328-1 | Jul 13, 2026 |
| tomcat10 · sles 15.7 | 10.1.56-150200.5.70.1 | SUSE-SU-2026:3112-1 | Jul 17, 2026 |
| tomcat10 · sles 16.0 | 10.1.56-160000.1.1 | SUSE-SU-2026:22647-1 | Jul 13, 2026 |
| tomcat10-admin-webapps · amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | ALAS2023-2026-1946 | Jul 20, 2026 |
| tomcat10-docs-webapp · amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | ALAS2023-2026-1946 | Jul 20, 2026 |
| tomcat10-el-5.0-api · amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | ALAS2023-2026-1946 | Jul 20, 2026 |
| tomcat10-jsp-3.1-api · amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | ALAS2023-2026-1946 | Jul 20, 2026 |
| tomcat10-lib · amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | ALAS2023-2026-1946 | Jul 20, 2026 |
| tomcat10-servlet-6.0-api · amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | ALAS2023-2026-1946 | Jul 20, 2026 |
| tomcat10-webapps · amzn 2023 | 1:10.1.57-1.amzn2023.0.1 | ALAS2023-2026-1946 | Jul 20, 2026 |
| tomcat11 · Debian 14 | 11.0.24-1 | DEBIAN-CVE-2026-55956 | Jun 30, 2026 |
| tomcat11 · opensuse-leap 16.0 | 11.0.23-160000.1.1 | OPENSUSE-SU-2026:21329-1 | Jul 13, 2026 |
| tomcat11 · sles 15.7 | 11.0.23-150600.13.24.1 | SUSE-SU-2026:3087-1 | Jul 16, 2026 |
| tomcat11 · sles 16.0 | 11.0.23-160000.1.1 | SUSE-SU-2026:22648-1 | Jul 13, 2026 |
| tomcat9 · Debian 12.15 (bookworm) | 9.0.70-2 | DEBIAN-CVE-2026-55956 | Jun 30, 2026 |
| tomcat9 · Debian 13.5 (trixie) | 9.0.70-2 | DEBIAN-CVE-2026-55956 | Jun 30, 2026 |
| tomcat9 · Debian 14 | 9.0.70-2 | DEBIAN-CVE-2026-55956 | Jun 30, 2026 |
| tomcat9 · RHEL 10 | 9.0.120-1.el10_0 | RHSA-2026:67163 | May 27, 2026 |
| tomcat9 · almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 | Sep 17, 2026 |
| tomcat9 · amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | ALAS2023-2026-1945 | Jul 20, 2026 |
| tomcat9-admin-webapps · almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 | Sep 17, 2026 |
| tomcat9-admin-webapps · amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | ALAS2023-2026-1945 | Jul 20, 2026 |
| tomcat9-docs-webapp · almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 | Sep 17, 2026 |
| tomcat9-docs-webapp · amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | ALAS2023-2026-1945 | Jul 20, 2026 |
| tomcat9-el-3.0-api · almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 | Sep 17, 2026 |
| tomcat9-el-3.0-api · amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | ALAS2023-2026-1945 | Jul 20, 2026 |
| tomcat9-jsp-2.3-api · almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 | Sep 17, 2026 |
| tomcat9-jsp-2.3-api · amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | ALAS2023-2026-1945 | Jul 20, 2026 |
| tomcat9-lib · almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 | Sep 17, 2026 |
| tomcat9-lib · amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | ALAS2023-2026-1945 | Jul 20, 2026 |
| tomcat9-servlet-4.0-api · almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 | Sep 17, 2026 |
| tomcat9-servlet-4.0-api · amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | ALAS2023-2026-1945 | Jul 20, 2026 |
| tomcat9-webapps · almalinux 10 | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 | Sep 17, 2026 |
| tomcat9-webapps · amzn 2023 | 1:9.0.120-1.amzn2023.0.1 | ALAS2023-2026-1945 | Jul 20, 2026 |
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