tomcat9: Improper Authentication vulnerability in Apache Tomcat
CVE-2026-75973 is fixed in 27 products on 1 platform, first by DEBIAN-CVE-2026-75973, released September 24, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libtcnative-1-0 · opensuse-leap 16.0 | 1.3.9-160000.1.1 | OPENSUSE-SU-2026:21984-1 | Sep 30, 2026 |
| libtcnative-1-0 · sles 15.6 | 1.3.9-150600.16.9.2 | SUSE-SU-2026:4544-1 | Oct 6, 2026 |
| libtcnative-1-0 · sles 15.7 | 1.3.9-150600.16.9.2 | SUSE-SU-2026:4544-1 | Oct 6, 2026 |
| libtcnative-1-0 · sles 16.0 | 1.3.9-160000.1.1 | SUSE-SU-2026:23985-1 | Sep 30, 2026 |
| libtcnative-2-0 · opensuse-leap 16.0 | 2.0.16-160000.1.1 | OPENSUSE-SU-2026:21984-1 | Sep 30, 2026 |
| libtcnative-2-0 · sles 16.0 | 2.0.16-160000.1.1 | SUSE-SU-2026:23985-1 | Sep 30, 2026 |
| tomcat · opensuse-leap 16.0 | 9.0.122-160000.1.1 | OPENSUSE-SU-2026:21984-1 | Sep 30, 2026 |
| tomcat · sles 15.6 | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 | Oct 6, 2026 |
| tomcat · sles 15.7 | 9.0.122-150200.123.2 | SUSE-SU-2026:4546-1 | Oct 6, 2026 |
| tomcat · sles 16.0 | 9.0.122-160000.1.1 | SUSE-SU-2026:23985-1 | Sep 30, 2026 |
| tomcat10 · Debian 14 | 10.1.60-1 | DEBIAN-CVE-2026-75973 | Sep 24, 2026 |
| tomcat10 · amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | ALAS2023-2026-3165 | Nov 7, 2026 |
| tomcat10 · opensuse-leap 16.0 | 10.1.60-160000.1.1 | OPENSUSE-SU-2026:21984-1 | Sep 30, 2026 |
| tomcat10 · sles 15.6 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 | Oct 6, 2026 |
| tomcat10 · sles 15.7 | 10.1.60-150200.5.82.2 | SUSE-SU-2026:4546-1 | Oct 6, 2026 |
| tomcat10 · sles 16.0 | 10.1.60-160000.1.1 | SUSE-SU-2026:23985-1 | Sep 30, 2026 |
| tomcat10-admin-webapps · amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | ALAS2023-2026-3165 | Nov 7, 2026 |
| tomcat10-docs-webapp · amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | ALAS2023-2026-3165 | Nov 7, 2026 |
| tomcat10-el-5.0-api · amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | ALAS2023-2026-3165 | Nov 7, 2026 |
| tomcat10-jsp-3.1-api · amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | ALAS2023-2026-3165 | Nov 7, 2026 |
| tomcat10-lib · amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | ALAS2023-2026-3165 | Nov 7, 2026 |
| tomcat10-servlet-6.0-api · amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | ALAS2023-2026-3165 | Nov 7, 2026 |
| tomcat10-webapps · amzn 2023 | 1:10.1.60-1.amzn2023.0.1 | ALAS2023-2026-3165 | Nov 7, 2026 |
| tomcat11 · amzn 2023 | 1:11.0.26-1.amzn2023.0.1 | ALAS2023-2026-3151 | Nov 7, 2026 |
| tomcat11 · opensuse-leap 16.0 | 11.0.26-160000.1.1 | OPENSUSE-SU-2026:21984-1 | Sep 30, 2026 |
| tomcat11 · sles 15.6 | 11.0.26-150600.13.36.2 | SUSE-SU-2026:4544-1 | Oct 6, 2026 |
| tomcat11 · sles 15.7 | 11.0.26-150600.13.36.2 | SUSE-SU-2026:4544-1 | Oct 6, 2026 |
| tomcat11 · sles 16.0 | 11.0.26-160000.1.1 | SUSE-SU-2026:23985-1 | Sep 30, 2026 |
| tomcat11-admin-webapps · amzn 2023 | 1:11.0.26-1.amzn2023.0.1 | ALAS2023-2026-3151 | Nov 7, 2026 |
| tomcat11-docs-webapp · amzn 2023 | 1:11.0.26-1.amzn2023.0.1 | ALAS2023-2026-3151 | Nov 7, 2026 |
| tomcat11-el-6.0-api · amzn 2023 | 1:11.0.26-1.amzn2023.0.1 | ALAS2023-2026-3151 | Nov 7, 2026 |
| tomcat11-jsp-4.0-api · amzn 2023 | 1:11.0.26-1.amzn2023.0.1 | ALAS2023-2026-3151 | Nov 7, 2026 |
| tomcat11-lib · amzn 2023 | 1:11.0.26-1.amzn2023.0.1 | ALAS2023-2026-3151 | Nov 7, 2026 |
| tomcat11-servlet-6.1-api · amzn 2023 | 1:11.0.26-1.amzn2023.0.1 | ALAS2023-2026-3151 | Nov 7, 2026 |
| tomcat11-webapps · amzn 2023 | 1:11.0.26-1.amzn2023.0.1 | ALAS2023-2026-3151 | Nov 7, 2026 |
| tomcat9 · Debian 12.15 (bookworm) | 9.0.70-2 | DEBIAN-CVE-2026-75973 | Sep 24, 2026 |
| tomcat9 · Debian 13.5 (trixie) | 9.0.70-2 | DEBIAN-CVE-2026-75973 | Sep 24, 2026 |
| tomcat9 · Debian 14 | 9.0.70-2 | DEBIAN-CVE-2026-75973 | Sep 24, 2026 |
| tomcat9 · amzn 2023 | 1:9.0.122-1.amzn2023.0.1 | ALAS2023-2026-3166 | Nov 7, 2026 |
| tomcat9-admin-webapps · amzn 2023 | 1:9.0.122-1.amzn2023.0.1 | ALAS2023-2026-3166 | Nov 7, 2026 |
| tomcat9-docs-webapp · amzn 2023 | 1:9.0.122-1.amzn2023.0.1 | ALAS2023-2026-3166 | Nov 7, 2026 |
| tomcat9-el-3.0-api · amzn 2023 | 1:9.0.122-1.amzn2023.0.1 | ALAS2023-2026-3166 | Nov 7, 2026 |
| tomcat9-jsp-2.3-api · amzn 2023 | 1:9.0.122-1.amzn2023.0.1 | ALAS2023-2026-3166 | Nov 7, 2026 |
| tomcat9-lib · amzn 2023 | 1:9.0.122-1.amzn2023.0.1 | ALAS2023-2026-3166 | Nov 7, 2026 |
| tomcat9-servlet-4.0-api · amzn 2023 | 1:9.0.122-1.amzn2023.0.1 | ALAS2023-2026-3166 | Nov 7, 2026 |
| tomcat9-webapps · amzn 2023 | 1:9.0.122-1.amzn2023.0.1 | ALAS2023-2026-3166 | Nov 7, 2026 |
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