Description
Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT, SPNEGO) that a user would be authenticated even if the user did not exist in the DataSourceRealm.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 – ≤ 11.0.24, 10.1.0-M1 – ≤ 10.1.57, 9.0.0.M1 – ≤ 9.0.120, 8.5.0 – ≤ 8.5.100, 7.0.0 – ≤ 7.0.109 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | tomcat10 | 10.1.60-1 | — |
| Debian 14 | tomcat11 | No fix yet | — |
| Debian 14 | tomcat9 | 9.0.70-2 | — |
| Debian 13 | tomcat10 | 10.1.60-1~deb13u1 | — |
| Debian 13 | tomcat11 | No fix yet | — |
| Debian 13 | tomcat9 | 9.0.70-2 | — |
| Debian 12 | tomcat10 | 10.1.60-1~deb12u1 | — |
| Debian 12 | tomcat9 | 9.0.70-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | tomcat9 +2 | No fix yet | — |
| Ubuntu 26.04 LTS | tomcat9 +2 | No fix yet | — |
| Ubuntu 24.04 LTS | tomcat9 +1 | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | tomcat9 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | tomcat9 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | tomcat8 +1 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | tomcat7 +1 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | tomcat6 +1 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat JBoss Web Server 7 | jws7-tomcat +9 | 11.0.21-7.redhat_00006.1.el8jws | RHSA-2026:76952 |
| Red Hat JBoss Web Server 6 | jws6-tomcat +9 | 10.1.49-16.redhat_00016.1.el8jws | RHSA-2026:73981 |
| Red Hat Hardened Images 1 | tomcat10 +9 | 10.1.60-0.1.hum1 | RHSA-2026:68257 |
| Red Hat Hardened Images 1 | tomcat11 +9 | 11.0.26-0.1.hum1 | RHSA-2026:68258 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | tomcat +7 | 1:10.1.49-5.el10_2.alma.1 | ALSA-2026:92862 |
| AlmaLinux 9 | tomcat +7 | 1:9.0.121-1.el9_8 | ALSA-2026:93469 |
| AlmaLinux 8 | tomcat +7 | 1:9.0.121-1.el8_10 | ALSA-2026:92869 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | tomcat | 1:9.0.121-1.el9_8 | RLSA-2026:98523, RLSA-2026:93469 |
| Rocky Linux 9 | tomcat-lib +6 | 1:9.0.121-3.el9_9 | RLSA-2026:98523 |
| Rocky Linux 8 | tomcat | 1:9.0.121-1.el8_10 | RLSA-2026:92869 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | tomcat | 9.0.121-150200.120.1 | SUSE-SU-2026:4203-1 |
| SLES 15 SP7 | tomcat10 | 10.1.59-150200.5.79.1 | SUSE-SU-2026:4119-1 |
| SLES 15 SP7 | tomcat11 | 11.0.25-150600.13.33.2 | SUSE-SU-2026:4114-1 |
| SLES 15 SP6 | tomcat | 9.0.121-150200.120.1 | SUSE-SU-2026:4203-1 |
| SLES 15 SP6 | tomcat10 | 10.1.59-150200.5.79.1 | SUSE-SU-2026:4119-1 |
| SLES 15 SP6 | tomcat11 | 11.0.25-150600.13.33.2 | SUSE-SU-2026:4114-1 |
| SLES 15 SP5 | tomcat | 9.0.121-150200.120.1 | SUSE-SU-2026:4203-1 |
| SLES 15 SP5 | tomcat10 | 10.1.59-150200.5.79.1 | SUSE-SU-2026:4119-1 |
| SLES 15 SP4 | tomcat | 9.0.121-150200.120.1 | SUSE-SU-2026:4203-1 |
| SLES 12 SP5 | tomcat | 9.0.121-3.177.3 | SUSE-SU-2026:4126-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | tomcat | 9.0.121-160000.1.1 | SUSE-SU-2026:23720-1, SUSE-SU-2026:23700-1 |
| SLES for SAP 16.0 | tomcat10 | 10.1.59-160000.1.1 | SUSE-SU-2026:23711-1, SUSE-SU-2026:23690-1 |
| SLES for SAP 16.0 | tomcat11 | 11.0.25-160000.1.1 | SUSE-SU-2026:23710-1, SUSE-SU-2026:23691-1 |
| SLES for SAP 15 SP6 | tomcat | 9.0.121-150200.120.1 | SUSE-SU-2026:4203-1 |
| SLES for SAP 15 SP6 | tomcat10 | 10.1.59-150200.5.79.1 | SUSE-SU-2026:4119-1 |
| SLES for SAP 15 SP6 | tomcat11 | 11.0.25-150600.13.33.2 | SUSE-SU-2026:4114-1 |
| SLES for SAP 15 SP5 | tomcat | 9.0.121-150200.120.1 | SUSE-SU-2026:4203-1 |
| SLES for SAP 15 SP5 | tomcat10 | 10.1.59-150200.5.79.1 | SUSE-SU-2026:4119-1 |
| SLES for SAP 15 SP4 | tomcat | 9.0.121-150200.120.1 | SUSE-SU-2026:4203-1 |
| SLES 16.0 | tomcat | 9.0.121-160000.1.1 | SUSE-SU-2026:23720-1, SUSE-SU-2026:23700-1 |
| SLES 16.0 | tomcat10 | 10.1.59-160000.1.1 | SUSE-SU-2026:23711-1, SUSE-SU-2026:23690-1 |
| SLES 16.0 | tomcat11 | 11.0.25-160000.1.1 | SUSE-SU-2026:23710-1, SUSE-SU-2026:23691-1 |
| SLE HPC 15 SP5 | tomcat | 9.0.121-150200.120.1 | SUSE-SU-2026:4203-1 |
| SLE HPC 15 SP5 | tomcat10 | 10.1.59-150200.5.79.1 | SUSE-SU-2026:4119-1 |
| SLE HPC 15 SP4 | tomcat | 9.0.121-150200.120.1 | SUSE-SU-2026:4203-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tomcat | 9.0.121-1.1 | openSUSE-SU-2026:11759-1 |
| openSUSE Tumbleweed | tomcat10 | 10.1.59-1.1 | openSUSE-SU-2026:11760-1 |
| openSUSE Tumbleweed | tomcat11 | 11.0.25-1.1 | openSUSE-SU-2026:11761-1 |
| openSUSE Leap 16.0 | tomcat | 9.0.121-160000.1.1 | openSUSE-SU-2026:21823-1 |
| openSUSE Leap 16.0 | tomcat10 | 10.1.59-160000.1.1 | openSUSE-SU-2026:21810-1 |
| openSUSE Leap 16.0 | tomcat11 | 11.0.25-160000.1.1 | openSUSE-SU-2026:21811-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | tomcat11 +7 | 1:11.0.26-1.amzn2023.0.1 | ALAS2023-2026-3151 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | tomcat +7 | 1:10.1.49-5.el10_2 | ELSA-2026-92862 |
| Oracle Linux 9 | tomcat +7 | 1:9.0.121-1.el9_8 | ELSA-2026-93469 |
| Oracle Linux 8 | tomcat +7 | 1:9.0.121-1.el8_10 | ELSA-2026-92869 |
Advisories 34
- RLSA-2026:98523 Important: tomcat security update Rocky Linux Security Advisories · Nov 13, 2026
- WID-SEC-2026-3007 Apache Tomcat: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- WID-SEC-2026-4056 Atlassian Produkte (Bamboo, Bitbucket, Confluence, Crucible, Fisheye und Jira): Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- ALSA-2026:92862 Important: tomcat security, bug fix, and enhancement update AlmaLinux Security Advisories · Nov 10, 2026
- RLSA-2026:93469 Important: tomcat security update Rocky Linux Security Advisories · Nov 3, 2026
- ALSA-2026:93469 Important: tomcat security update AlmaLinux Security Advisories · Nov 2, 2026
- WID-SEC-2026-3595 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 2, 2026
- ELSA-2026-93469 Important: tomcat security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 2, 2026
- RLSA-2026:92869 Important: tomcat security update Rocky Linux Security Advisories · Oct 31, 2026
- ALSA-2026:92869 Important: tomcat security update AlmaLinux Security Advisories · Oct 31, 2026
- ELSA-2026-92862 Important: tomcat security, bug fix, and enhancement update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Oct 30, 2026
- ELSA-2026-92869 Important: tomcat security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 29, 2026
- WID-SEC-2026-4085 Oracle Supply Chain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 20, 2026
- RHSA-2026:76952 Red Hat Security Advisory: Red Hat JBoss Web Server 7.0.2 release and security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2026:73981 Red Hat Security Advisory: Red Hat JBoss Web Server 6.2.5 release and security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- ALAS2023-2026-3151 Important: tomcat11 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 12, 2026
- RHSA-2026:68258 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:68257 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- SUSE-SU-2026:23691-1 Security update for tomcat11 SUSE / openSUSE Security Updates · Sep 29, 2026
- SUSE-SU-2026:23710-1 Security update for tomcat11 SUSE / openSUSE Security Updates · Sep 29, 2026
- SUSE-SU-2026:23711-1 Security update for tomcat10 SUSE / openSUSE Security Updates · Sep 29, 2026
- SUSE-SU-2026:23720-1 Security update for tomcat SUSE / openSUSE Security Updates · Sep 29, 2026
- SUSE-SU-2026:23690-1 Security update for tomcat10 SUSE / openSUSE Security Updates · Sep 29, 2026
- SUSE-SU-2026:23700-1 Security update for tomcat SUSE / openSUSE Security Updates · Sep 29, 2026
- SUSE-SU-2026:4203-1 Security update for tomcat SUSE / openSUSE Security Updates · Sep 16, 2026
- SUSE-SU-2026:4126-1 Security update for tomcat SUSE / openSUSE Security Updates · Sep 15, 2026
- SUSE-SU-2026:4114-1 Security update for tomcat11 SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:4119-1 Security update for tomcat10 SUSE / openSUSE Security Updates · Sep 14, 2026
- openSUSE-SU-2026:21823-1 Security update for tomcat SUSE / openSUSE Security Updates · Sep 12, 2026
- openSUSE-SU-2026:11759-1 tomcat-9.0.121-1.1 on GA media SUSE / openSUSE Security Updates · Sep 12, 2026
- openSUSE-SU-2026:11760-1 tomcat10-10.1.59-1.1 on GA media SUSE / openSUSE Security Updates · Sep 12, 2026
- openSUSE-SU-2026:11761-1 tomcat11-11.0.25-1.1 on GA media SUSE / openSUSE Security Updates · Sep 12, 2026
- openSUSE-SU-2026:21811-1 Security update for tomcat11 SUSE / openSUSE Security Updates · Sep 10, 2026
- openSUSE-SU-2026:21810-1 Security update for tomcat10 SUSE / openSUSE Security Updates · Sep 10, 2026
References
- https://lists.apache.org/thread/8robqo76q0osxgw0b5lcwgz0hcf9h4zc vendor-advisory