Vulnerability · Published Jun 29, 2026 · Assigned by apache
CVE-2026-53434Apache Tomcat: Invalid CRL configuration doesn't trigger failure for FFM Connector
Critical 9.1
In plain English
A critical-severity security flaw in Apache Tomcat from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M7 through 10.1.55, from 9.0.83 through 9.0.118. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fixes the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | tomcat | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:8 | tomcat-admin-webapps | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-admin-webapps | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:8 | tomcat-docs-webapp | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-docs-webapp | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:8 | tomcat-el-3.0-api | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-el-3.0-api | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:8 | tomcat-jsp-2.3-api | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-jsp-2.3-api | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:8 | tomcat-lib | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-lib | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:8 | tomcat-servlet-4.0-api | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-servlet-4.0-api | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:8 | tomcat-webapps | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-webapps | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:10 | tomcat9 | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-admin-webapps | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-docs-webapp | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-el-3.0-api | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-jsp-2.3-api | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-lib | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-servlet-4.0-api | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-webapps | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| Debian:12 | tomcat10 | no fix listed | DEBIAN-CVE-2026-53434 |
| Debian:13 | tomcat10 | no fix listed | DEBIAN-CVE-2026-53434 |
| Debian:14 | tomcat10 | 10.1.60-1 | DEBIAN-CVE-2026-53434 |
| Debian:13 | tomcat11 | no fix listed | DEBIAN-CVE-2026-53434 |
| Debian:14 | tomcat11 | 11.0.24-1 | DEBIAN-CVE-2026-53434 |
| Debian:12 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-53434 |
| Debian:13 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-53434 |
| Debian:14 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-53434 |
| Maven | org.apache.tomcat:tomcat-util | 9.0.119 | GHSA-4x29-79gh-6v8q |
| Maven | org.apache.tomcat:tomcat-util | 11.0.23 | GHSA-4x29-79gh-6v8q |
| Maven | org.apache.tomcat:tomcat-util | 10.1.56 | GHSA-4x29-79gh-6v8q |
| Ubuntu:24.04:LTS | tomcat10 | no fix listed | UBUNTU-CVE-2026-53434 |
| Ubuntu:25.10 | tomcat10 | no fix listed | UBUNTU-CVE-2026-53434 |
| Ubuntu:26.04:LTS | tomcat10 | no fix listed | UBUNTU-CVE-2026-53434 |
| Ubuntu:26.10 | tomcat10 | no fix listed | UBUNTU-CVE-2026-53434 |
| Ubuntu:25.10 | tomcat11 | no fix listed | UBUNTU-CVE-2026-53434 |
| Ubuntu:26.04:LTS | tomcat11 | no fix listed | UBUNTU-CVE-2026-53434 |
| Ubuntu:26.10 | tomcat11 | no fix listed | UBUNTU-CVE-2026-53434 |
| Ubuntu:24.04:LTS | tomcat9 | no fix listed | UBUNTU-CVE-2026-53434 |
| Ubuntu:25.10 | tomcat9 | no fix listed | UBUNTU-CVE-2026-53434 |
| Ubuntu:26.04:LTS | tomcat9 | no fix listed | UBUNTU-CVE-2026-53434 |
| Ubuntu:26.10 | tomcat9 | no fix listed | UBUNTU-CVE-2026-53434 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 – through 11.0.2210.1.0-M7 – through 10.1.559.0.83 – through 9.0.118 |
Weakness: CWE-390 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N