Description
Improper Authentication vulnerability in Apache Tomcat. When Jakarta Authentication was configured with SimpleAuthConfigProvider as the default provider and multiple web application used that provider, the realm for the first web application to authenticate a request would be used for all web applications.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M4 through 9.0.121.
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. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fixes the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 – ≤ 11.0.25, 10.1.0-M1 – ≤ 10.1.59, 9.0.0.M4 – ≤ 9.0.121, 8.5.0 – ≤ 8.5.100 | — |
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 +1 | No fix yet | — |
| Debian 13 | tomcat9 | 9.0.70-2 | — |
| Debian 12 | tomcat10 | No fix yet | — |
| 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 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 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | libtcnative-1-0 | 1.3.9-150600.16.9.2 | SUSE-SU-2026:4544-1 |
| SLES 15 SP7 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP7 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP7 | tomcat11 | 11.0.26-150600.13.36.2 | SUSE-SU-2026:4544-1 |
| SLES 15 SP6 | libtcnative-1-0 | 1.3.9-150600.16.9.2 | SUSE-SU-2026:4544-1 |
| SLES 15 SP6 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP6 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP6 | tomcat11 | 11.0.26-150600.13.36.2 | SUSE-SU-2026:4544-1 |
| SLES 15 SP5 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP5 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP5 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP4 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLES 15 SP4 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES 12 SP5 | libapr1 | 1.6.5-4.13.1 | SUSE-SU-2026:4927-1 |
| SLES 12 SP5 | libtcnative-1-0 | 1.3.9-3.9.1 | SUSE-SU-2026:4927-1 |
| SLES 12 SP5 | tomcat | 9.0.123-3.182.2 | SUSE-SU-2026:4927-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | libtcnative-1-0 | 1.3.9-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES for SAP 16.0 | libtcnative-2-0 | 2.0.16-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES for SAP 16.0 | tomcat | 9.0.122-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES for SAP 16.0 | tomcat10 | 10.1.60-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES for SAP 16.0 | tomcat11 | 11.0.26-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES for SAP 15 SP6 | libtcnative-1-0 | 1.3.9-150600.16.9.2 | SUSE-SU-2026:4544-1 |
| SLES for SAP 15 SP6 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP6 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP6 | tomcat11 | 11.0.26-150600.13.36.2 | SUSE-SU-2026:4544-1 |
| SLES for SAP 15 SP5 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP5 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP5 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP4 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLES for SAP 15 SP4 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLES 16.0 | libtcnative-1-0 | 1.3.9-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES 16.0 | libtcnative-2-0 | 2.0.16-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES 16.0 | tomcat | 9.0.122-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES 16.0 | tomcat10 | 10.1.60-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLES 16.0 | tomcat11 | 11.0.26-160000.1.1 | SUSE-SU-2026:23985-1 |
| SLE HPC 15 SP5 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLE HPC 15 SP5 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
| SLE HPC 15 SP5 | tomcat10 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 |
| SLE HPC 15 SP4 | libtcnative-1-0 | 1.3.9-150200.6.11.2 | SUSE-SU-2026:4546-1 |
| SLE HPC 15 SP4 | tomcat | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tomcat | 9.0.122-1.1 | openSUSE-SU-2026:11906-1 |
| openSUSE Tumbleweed | tomcat10 | 10.1.60-1.1 | openSUSE-SU-2026:11907-1 |
| openSUSE Tumbleweed | tomcat11 | 11.0.26-1.1 | openSUSE-SU-2026:11908-1 |
| openSUSE Leap 16.0 | libtcnative-1-0 | 1.3.9-160000.1.1 | openSUSE-SU-2026:21984-1 |
| openSUSE Leap 16.0 | libtcnative-2-0 | 2.0.16-160000.1.1 | openSUSE-SU-2026:21984-1 |
| openSUSE Leap 16.0 | tomcat | 9.0.122-160000.1.1 | openSUSE-SU-2026:21984-1 |
| openSUSE Leap 16.0 | tomcat10 | 10.1.60-160000.1.1 | openSUSE-SU-2026:21984-1 |
| openSUSE Leap 16.0 | tomcat11 | 11.0.26-160000.1.1 | openSUSE-SU-2026:21984-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | tomcat10 +7 | 1:10.1.60-1.amzn2023.0.1 | ALAS2023-2026-3165 |
| Amazon Linux 2023 | tomcat11 +7 | 1:11.0.26-1.amzn2023.0.1 | ALAS2023-2026-3151 |
| Amazon Linux 2023 | tomcat9 +7 | 1:9.0.122-1.amzn2023.0.1 | ALAS2023-2026-3166 |
Advisories 14
- WID-SEC-2026-3527 Apache Tomcat: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 9, 2026
- SUSE-SU-2026:4927-1 Security update for libapr1, libtcnative-1-0, tomcat SUSE / openSUSE Security Updates · Oct 31, 2026
- ALAS2023-2026-3151 Important: tomcat11 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 12, 2026
- ALAS2023-2026-3165 Important: tomcat10 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 12, 2026
- ALAS2023-2026-3166 Important: tomcat9 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-2026:4544-1 Security update for libtcnative-1-0, tomcat11 SUSE / openSUSE Security Updates · Oct 7, 2026
- SUSE-SU-2026:4546-1 Security update for libtcnative-1-0, tomcat, tomcat10 SUSE / openSUSE Security Updates · Oct 7, 2026
- SUSE-SU-2026:23985-1 Security update for libtcnative-1-0, libtcnative-2-0, tomcat, tomcat10, tomcat11 SUSE / openSUSE Security Updates · Oct 6, 2026
- openSUSE-SU-2026:21984-1 Security update for libtcnative-1-0, libtcnative-2-0, tomcat, tomcat10, tomcat11 SUSE / openSUSE Security Updates · Oct 1, 2026
- openSUSE-SU-2026:11906-1 tomcat-9.0.122-1.1 on GA media SUSE / openSUSE Security Updates · Sep 29, 2026
- openSUSE-SU-2026:11907-1 tomcat10-10.1.60-1.1 on GA media SUSE / openSUSE Security Updates · Sep 29, 2026
- openSUSE-SU-2026:11908-1 tomcat11-11.0.26-1.1 on GA media SUSE / openSUSE Security Updates · Sep 29, 2026
References
- https://lists.apache.org/thread/njjcdkkzqyzx4n3ffc4ffjmyh5mpl1gr vendor-advisory