Description
A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism allowed attackers to authenticate without providing the correct password.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122.
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 11.0.27, 10.1.61 or 9.0.123, which fix the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 – ≤ 11.0.26, 10.1.0-M1 – ≤ 10.1.60, 9.0.0.M1 – ≤ 9.0.122, 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 +1 | 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 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | tomcat | 9.0.123-150200.126.1 | SUSE-SU-2026:5116-1 |
| SLES 15 SP7 | tomcat10 | 10.1.61-150200.5.85.1 | SUSE-SU-2026:5073-1 |
| SLES 15 SP6 | tomcat | 9.0.123-150200.126.1 | SUSE-SU-2026:5116-1 |
| SLES 15 SP6 | tomcat10 | 10.1.61-150200.5.85.1 | SUSE-SU-2026:5073-1 |
| SLES 15 SP5 | tomcat | 9.0.123-150200.126.1 | SUSE-SU-2026:5116-1 |
| SLES 15 SP5 | tomcat10 | 10.1.61-150200.5.85.1 | SUSE-SU-2026:5073-1 |
| SLES 15 SP4 | tomcat | 9.0.123-150200.126.1 | SUSE-SU-2026:5116-1 |
| 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 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | tomcat | 9.0.123-150200.126.1 | SUSE-SU-2026:5116-1 |
| SLES for SAP 15 SP6 | tomcat10 | 10.1.61-150200.5.85.1 | SUSE-SU-2026:5073-1 |
| SLES for SAP 15 SP5 | tomcat | 9.0.123-150200.126.1 | SUSE-SU-2026:5116-1 |
| SLES for SAP 15 SP5 | tomcat10 | 10.1.61-150200.5.85.1 | SUSE-SU-2026:5073-1 |
| SLES for SAP 15 SP4 | tomcat | 9.0.123-150200.126.1 | SUSE-SU-2026:5116-1 |
| SLE HPC 15 SP5 | tomcat | 9.0.123-150200.126.1 | SUSE-SU-2026:5116-1 |
| SLE HPC 15 SP5 | tomcat10 | 10.1.61-150200.5.85.1 | SUSE-SU-2026:5073-1 |
| SLE HPC 15 SP4 | tomcat | 9.0.123-150200.126.1 | SUSE-SU-2026:5116-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tomcat | 9.0.123-1.1 | openSUSE-SU-2026:12254-1 |
| openSUSE Tumbleweed | tomcat10 | 10.1.61-1.1 | openSUSE-SU-2026:12255-1 |
| openSUSE Tumbleweed | tomcat11 | 11.0.27-1.1 | openSUSE-SU-2026:12256-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | tomcat10 +7 | 1:10.1.61-1.amzn2023.0.1 | ALAS2023-2026-3420 |
| Amazon Linux 2 | tomcat +9 | 7.0.76-10.amzn2.0.20 | ALAS2-2026-4089 |
Advisories 9
- ALAS2023-2026-3420 Important: tomcat10 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Nov 12, 2026
- WID-SEC-2026-4066 Apache Tomcat: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 9, 2026
- ALAS2-2026-4089 Important: tomcat security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 9, 2026
- SUSE-SU-2026:5116-1 Security update for tomcat SUSE / openSUSE Security Updates · Nov 5, 2026
- SUSE-SU-2026:5073-1 Security update for tomcat10 SUSE / openSUSE Security Updates · Nov 3, 2026
- SUSE-SU-2026:4927-1 Security update for libapr1, libtcnative-1-0, tomcat SUSE / openSUSE Security Updates · Oct 31, 2026
- openSUSE-SU-2026:12255-1 tomcat10-10.1.61-1.1 on GA media SUSE / openSUSE Security Updates · Oct 24, 2026
- openSUSE-SU-2026:12256-1 tomcat11-11.0.27-1.1 on GA media SUSE / openSUSE Security Updates · Oct 24, 2026
- openSUSE-SU-2026:12254-1 tomcat-9.0.123-1.1 on GA media SUSE / openSUSE Security Updates · Oct 24, 2026