CVE-2026-68763
tomcat: Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset
CVE-2026-68763 is fixed in 23 products on 1 platform, first by RHSA-2026:92863, released August 25, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.2
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0075
55th percentile
Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| jws6-tomcat · RHEL 10 | 10.1.49-16.redhat_00016.1.el10jws | RHSA-2026:73981 | Aug 25, 2026 |
| jws7-tomcat · RHEL 10 | 11.0.21-7.redhat_00006.1.el10jws | RHSA-2026:76952 | Aug 25, 2026 |
| tomcat · RHEL 10 | 10.1.49-2.el10_0 | RHSA-2026:92863 | Aug 25, 2026 |
| tomcat · RHEL 9 | 1:9.0.121-1.el9_8 | RHSA-2026:93469 | Nov 3, 2026 |
| tomcat · almalinux 10 | 1:10.1.49-5.el10_2.alma.1 | ALSA-2026:92862 | Nov 11, 2026 |
| tomcat · almalinux 9 | 1:9.0.121-1.el9_8 | ALSA-2026:93469 | Nov 7, 2026 |
| tomcat · ol 10 | 1:10.1.49-5.el10_2 | ELSA-2026-92862 | Nov 7, 2026 |
| tomcat · ol 9 | 1:9.0.121-1.el9_8 | ELSA-2026-93469 | Nov 7, 2026 |
| tomcat · opensuse-leap 16.0 | 9.0.121-160000.1.1 | OPENSUSE-SU-2026:21823-1 | Sep 9, 2026 |
| tomcat · rocky 9 | 1:9.0.121-1.el9_8 | RLSA-2026:93469 | Nov 7, 2026 |
| tomcat · sles 15.6 | 9.0.121-150200.120.1 | SUSE-SU-2026:4203-1 | Sep 16, 2026 |
| tomcat · sles 15.7 | 9.0.121-150200.120.1 | SUSE-SU-2026:4203-1 | Sep 16, 2026 |
| tomcat · sles 16.0 | 9.0.121-160000.1.1 | SUSE-SU-2026:23720-1 | Sep 9, 2026 |
| tomcat-admin-webapps · RHEL 9 | 1:9.0.121-1.el9_8 | RHSA-2026:93469 | Nov 3, 2026 |
| tomcat-admin-webapps · almalinux 10 | 1:10.1.49-5.el10_2.alma.1 | ALSA-2026:92862 | Nov 11, 2026 |
| tomcat-admin-webapps · almalinux 9 | 1:9.0.121-1.el9_8 | ALSA-2026:93469 | Nov 7, 2026 |
| tomcat-admin-webapps · ol 10 | 1:10.1.49-5.el10_2 | ELSA-2026-92862 | Nov 7, 2026 |
| tomcat-admin-webapps · ol 9 | 1:9.0.121-1.el9_8 | ELSA-2026-93469 | Nov 7, 2026 |
| tomcat-docs-webapp · RHEL 9 | 1:9.0.121-1.el9_8 | RHSA-2026:93469 | Nov 3, 2026 |
| tomcat-docs-webapp · almalinux 10 | 1:10.1.49-5.el10_2.alma.1 | ALSA-2026:92862 | Nov 11, 2026 |
| tomcat-docs-webapp · almalinux 9 | 1:9.0.121-1.el9_8 | ALSA-2026:93469 | Nov 7, 2026 |
| tomcat-docs-webapp · ol 10 | 1:10.1.49-5.el10_2 | ELSA-2026-92862 | Nov 7, 2026 |
| tomcat-docs-webapp · ol 9 | 1:9.0.121-1.el9_8 | ELSA-2026-93469 | Nov 7, 2026 |
| tomcat-el-3.0-api · RHEL 9 | 1:9.0.121-1.el9_8 | RHSA-2026:93469 | Nov 3, 2026 |
| tomcat-el-3.0-api · almalinux 9 | 1:9.0.121-1.el9_8 | ALSA-2026:93469 | Nov 7, 2026 |
| tomcat-el-3.0-api · ol 9 | 1:9.0.121-1.el9_8 | ELSA-2026-93469 | Nov 7, 2026 |
| tomcat-el-5.0-api · almalinux 10 | 1:10.1.49-5.el10_2.alma.1 | ALSA-2026:92862 | Nov 11, 2026 |
| tomcat-el-5.0-api · ol 10 | 1:10.1.49-5.el10_2 | ELSA-2026-92862 | Nov 7, 2026 |
| tomcat-jsp-2.3-api · RHEL 9 | 1:9.0.121-1.el9_8 | RHSA-2026:93469 | Nov 3, 2026 |
| tomcat-jsp-2.3-api · almalinux 9 | 1:9.0.121-1.el9_8 | ALSA-2026:93469 | Nov 7, 2026 |
| tomcat-jsp-2.3-api · ol 9 | 1:9.0.121-1.el9_8 | ELSA-2026-93469 | Nov 7, 2026 |
| tomcat-jsp-3.1-api · almalinux 10 | 1:10.1.49-5.el10_2.alma.1 | ALSA-2026:92862 | Nov 11, 2026 |
| tomcat-jsp-3.1-api · ol 10 | 1:10.1.49-5.el10_2 | ELSA-2026-92862 | Nov 7, 2026 |
| tomcat-lib · RHEL 9 | 1:9.0.121-1.el9_8 | RHSA-2026:93469 | Nov 3, 2026 |
| tomcat-lib · almalinux 10 | 1:10.1.49-5.el10_2.alma.1 | ALSA-2026:92862 | Nov 11, 2026 |
| tomcat-lib · almalinux 9 | 1:9.0.121-1.el9_8 | ALSA-2026:93469 | Nov 7, 2026 |
| tomcat-lib · ol 10 | 1:10.1.49-5.el10_2 | ELSA-2026-92862 | Nov 7, 2026 |
| tomcat-lib · ol 9 | 1:9.0.121-1.el9_8 | ELSA-2026-93469 | Nov 7, 2026 |
| tomcat-servlet-4.0-api · RHEL 9 | 1:9.0.121-1.el9_8 | RHSA-2026:93469 | Nov 3, 2026 |
| tomcat-servlet-4.0-api · almalinux 9 | 1:9.0.121-1.el9_8 | ALSA-2026:93469 | Nov 7, 2026 |
| tomcat-servlet-4.0-api · ol 9 | 1:9.0.121-1.el9_8 | ELSA-2026-93469 | Nov 7, 2026 |
| tomcat-servlet-6.0-api · almalinux 10 | 1:10.1.49-5.el10_2.alma.1 | ALSA-2026:92862 | Nov 11, 2026 |
| tomcat-servlet-6.0-api · ol 10 | 1:10.1.49-5.el10_2 | ELSA-2026-92862 | Nov 7, 2026 |
| tomcat-webapps · RHEL 9 | 1:9.0.121-1.el9_8 | RHSA-2026:93469 | Nov 3, 2026 |
| tomcat-webapps · almalinux 10 | 1:10.1.49-5.el10_2.alma.1 | ALSA-2026:92862 | Nov 11, 2026 |
| tomcat-webapps · almalinux 9 | 1:9.0.121-1.el9_8 | ALSA-2026:93469 | Nov 7, 2026 |
| tomcat-webapps · ol 10 | 1:10.1.49-5.el10_2 | ELSA-2026-92862 | Nov 7, 2026 |
| tomcat-webapps · ol 9 | 1:9.0.121-1.el9_8 | ELSA-2026-93469 | Nov 7, 2026 |
| tomcat10 · Debian 12.15 (bookworm) | 10.1.60-1~deb12u1 | DEBIAN-CVE-2026-68763 | Aug 27, 2026 |
| tomcat10 · Debian 14 | 10.1.60-1 | DEBIAN-CVE-2026-68763 | Aug 27, 2026 |
| tomcat10 · opensuse-leap 16.0 | 10.1.59-160000.1.1 | OPENSUSE-SU-2026:21810-1 | Sep 8, 2026 |
| tomcat10 · sles 15.6 | 10.1.59-150200.5.79.1 | SUSE-SU-2026:4119-1 | Sep 10, 2026 |
| tomcat10 · sles 15.7 | 10.1.59-150200.5.79.1 | SUSE-SU-2026:4119-1 | Sep 10, 2026 |
| tomcat10 · sles 16.0 | 10.1.59-160000.1.1 | SUSE-SU-2026:23711-1 | Sep 8, 2026 |
| tomcat11 · amzn 2023 | 1:11.0.26-1.amzn2023.0.1 | ALAS2023-2026-3151 | Nov 7, 2026 |
| tomcat11 · opensuse-leap 16.0 | 11.0.25-160000.1.1 | OPENSUSE-SU-2026:21811-1 | Sep 8, 2026 |
| tomcat11 · sles 15.6 | 11.0.25-150600.13.33.2 | SUSE-SU-2026:4114-1 | Sep 9, 2026 |
| tomcat11 · sles 15.7 | 11.0.25-150600.13.33.2 | SUSE-SU-2026:4114-1 | Sep 9, 2026 |
| tomcat11 · sles 16.0 | 11.0.25-160000.1.1 | SUSE-SU-2026:23710-1 | Sep 8, 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-2026-68763 | Aug 27, 2026 |
| tomcat9 · Debian 13.5 (trixie) | 9.0.70-2 | DEBIAN-CVE-2026-68763 | Aug 27, 2026 |
| tomcat9 · Debian 14 | 9.0.70-2 | DEBIAN-CVE-2026-68763 | Aug 27, 2026 |
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