# CVE-2026-24733: tomcat9: Improper Input Validation vulnerability in Apache Tomcat. Tomcat did not limit HTTP/0.9 requests to the GET method CVE-2026-24733 is fixed in 26 products on 1 platform, first by DEBIAN-CVE-2026-24733, released February 17, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-24733 - Priority: High - CVSS: 7.4 (low) - EPSS: 0.0055 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Feb 17, 2026 ## Description Improper Input Validation vulnerability in Apache Tomcat. Tomcat did not limit HTTP/0.9 requests to the GET method. If a security constraint was configured to allow HEAD requests to a URI but deny GET requests, the user could bypass that constraint on GET requests by sending a (specification invalid) HEAD request using HTTP/0.9. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.14, from 10.1.0-M1 through 10.1.49, from 9.0.0.M1 through 9.0.112. Older, EOL versions are also affected. Users are recommended to upgrade to version 11.0.15 or later, 10.1.50 or later or 9.0.113 or later, which fixes the issue. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | jws6-tomcat RHEL 10 | 10.1.49-10.redhat_00008.1.el10jws | [RHSA-2026:12194](https://patchblox.com/security/data/fix/linux/rhsa-2026-12194.md) | Apr 9, 2026 | | Linux | tomcat RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 | | Linux | tomcat RHEL 9 | 1:9.0.117-1.el9_8 | [RHSA-2026:26323](https://patchblox.com/security/data/fix/linux/rhsa-2026-26323.md) | Jun 24, 2026 | | Linux | tomcat almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 | | Linux | tomcat almalinux 9 | 1:9.0.117-1.el9_8 | [ALSA-2026:26323](https://patchblox.com/security/data/fix/linux/alsa-2026-26323.md) | Jun 16, 2026 | | Linux | tomcat opensuse-leap 15.6 | 9.0.115-150200.102.1 | [SUSE-SU-2026:0932-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0932-1.md) | Mar 19, 2026 | | Linux | tomcat opensuse-leap 16.0 | 9.0.115-160000.1.1 | [OPENSUSE-SU-2026:20350-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20350-1.md) | Mar 12, 2026 | | Linux | tomcat sles 15.6 | 9.0.115-150200.102.1 | [SUSE-SU-2026:0932-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0932-1.md) | Mar 19, 2026 | | Linux | tomcat sles 15.7 | 9.0.115-150200.102.1 | [SUSE-SU-2026:0932-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0932-1.md) | Mar 19, 2026 | | Linux | tomcat-admin-webapps RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 | | Linux | tomcat-admin-webapps RHEL 9 | 1:9.0.117-1.el9_8 | [RHSA-2026:26323](https://patchblox.com/security/data/fix/linux/rhsa-2026-26323.md) | Jun 24, 2026 | | Linux | tomcat-admin-webapps almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 | | Linux | tomcat-admin-webapps almalinux 9 | 1:9.0.117-1.el9_8 | [ALSA-2026:26323](https://patchblox.com/security/data/fix/linux/alsa-2026-26323.md) | Jun 16, 2026 | | Linux | tomcat-docs-webapp RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 | | Linux | tomcat-docs-webapp RHEL 9 | 1:9.0.117-1.el9_8 | [RHSA-2026:26323](https://patchblox.com/security/data/fix/linux/rhsa-2026-26323.md) | Jun 24, 2026 | | Linux | tomcat-docs-webapp almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 | | Linux | tomcat-docs-webapp almalinux 9 | 1:9.0.117-1.el9_8 | [ALSA-2026:26323](https://patchblox.com/security/data/fix/linux/alsa-2026-26323.md) | Jun 16, 2026 | | Linux | tomcat-el-3.0-api RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 | | Linux | tomcat-el-3.0-api RHEL 9 | 1:9.0.117-1.el9_8 | [RHSA-2026:26323](https://patchblox.com/security/data/fix/linux/rhsa-2026-26323.md) | Jun 24, 2026 | | Linux | tomcat-el-3.0-api almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 | | Linux | tomcat-el-3.0-api almalinux 9 | 1:9.0.117-1.el9_8 | [ALSA-2026:26323](https://patchblox.com/security/data/fix/linux/alsa-2026-26323.md) | Jun 16, 2026 | | Linux | tomcat-jsp-2.3-api RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 | | Linux | tomcat-jsp-2.3-api RHEL 9 | 1:9.0.117-1.el9_8 | [RHSA-2026:26323](https://patchblox.com/security/data/fix/linux/rhsa-2026-26323.md) | Jun 24, 2026 | | Linux | tomcat-jsp-2.3-api almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 | | Linux | tomcat-jsp-2.3-api almalinux 9 | 1:9.0.117-1.el9_8 | [ALSA-2026:26323](https://patchblox.com/security/data/fix/linux/alsa-2026-26323.md) | Jun 16, 2026 | | Linux | tomcat-lib RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 | | Linux | tomcat-lib RHEL 9 | 1:9.0.117-1.el9_8 | [RHSA-2026:26323](https://patchblox.com/security/data/fix/linux/rhsa-2026-26323.md) | Jun 24, 2026 | | Linux | tomcat-lib almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 | | Linux | tomcat-lib almalinux 9 | 1:9.0.117-1.el9_8 | [ALSA-2026:26323](https://patchblox.com/security/data/fix/linux/alsa-2026-26323.md) | Jun 16, 2026 | | Linux | tomcat-servlet-4.0-api RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 | | Linux | tomcat-servlet-4.0-api RHEL 9 | 1:9.0.117-1.el9_8 | [RHSA-2026:26323](https://patchblox.com/security/data/fix/linux/rhsa-2026-26323.md) | Jun 24, 2026 | | Linux | tomcat-servlet-4.0-api almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 | | Linux | tomcat-servlet-4.0-api almalinux 9 | 1:9.0.117-1.el9_8 | [ALSA-2026:26323](https://patchblox.com/security/data/fix/linux/alsa-2026-26323.md) | Jun 16, 2026 | | Linux | tomcat-webapps RHEL 8 | 1:9.0.120-1.el8_10 | [RHSA-2026:68677](https://patchblox.com/security/data/fix/linux/rhsa-2026-68677.md) | Sep 19, 2026 | | Linux | tomcat-webapps RHEL 9 | 1:9.0.117-1.el9_8 | [RHSA-2026:26323](https://patchblox.com/security/data/fix/linux/rhsa-2026-26323.md) | Jun 24, 2026 | | Linux | tomcat-webapps almalinux 8 | 1:9.0.120-1.el8_10 | [ALSA-2026:68677](https://patchblox.com/security/data/fix/linux/alsa-2026-68677.md) | Sep 17, 2026 | | Linux | tomcat-webapps almalinux 9 | 1:9.0.117-1.el9_8 | [ALSA-2026:26323](https://patchblox.com/security/data/fix/linux/alsa-2026-26323.md) | Jun 16, 2026 | | Linux | tomcat10 Debian 12.15 (bookworm) | 10.1.52-1~deb12u1 | [DEBIAN-CVE-2026-24733](https://patchblox.com/security/data/fix/linux/debian-cve-2026-24733.md) | Feb 17, 2026 | | Linux | tomcat10 Debian 13.5 (trixie) | 10.1.52-1~deb13u1 | [DEBIAN-CVE-2026-24733](https://patchblox.com/security/data/fix/linux/debian-cve-2026-24733.md) | Feb 17, 2026 | | Linux | tomcat10 Debian 14 | 10.1.52-1 | [DEBIAN-CVE-2026-24733](https://patchblox.com/security/data/fix/linux/debian-cve-2026-24733.md) | Feb 17, 2026 | | Linux | tomcat10 amzn 2023 | 1:10.1.52-1.amzn2023.0.1 | [ALAS2023-2026-1497](https://patchblox.com/security/data/fix/linux/alas2023-2026-1497.md) | Mar 16, 2026 | | Linux | tomcat10 opensuse-leap 15.6 | 10.1.52-150200.5.61.1 | [SUSE-SU-2026:0890-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0890-1.md) | Mar 13, 2026 | | Linux | tomcat10 opensuse-leap 16.0 | 10.1.52-160000.1.1 | [OPENSUSE-SU-2026:20444-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20444-1.md) | Mar 30, 2026 | | Linux | tomcat10 sles 15.6 | 10.1.52-150200.5.61.1 | [SUSE-SU-2026:0890-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0890-1.md) | Mar 13, 2026 | | Linux | tomcat10 sles 15.7 | 10.1.52-150200.5.61.1 | [SUSE-SU-2026:0890-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0890-1.md) | Mar 13, 2026 | | Linux | tomcat10 sles 16.0 | 10.1.52-160000.1.1 | [SUSE-SU-2026:20982-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20982-1.md) | Mar 30, 2026 | | Linux | tomcat10-admin-webapps amzn 2023 | 1:10.1.52-1.amzn2023.0.1 | [ALAS2023-2026-1497](https://patchblox.com/security/data/fix/linux/alas2023-2026-1497.md) | Mar 16, 2026 | | Linux | tomcat10-docs-webapp amzn 2023 | 1:10.1.52-1.amzn2023.0.1 | [ALAS2023-2026-1497](https://patchblox.com/security/data/fix/linux/alas2023-2026-1497.md) | Mar 16, 2026 | | Linux | tomcat10-el-5.0-api amzn 2023 | 1:10.1.52-1.amzn2023.0.1 | [ALAS2023-2026-1497](https://patchblox.com/security/data/fix/linux/alas2023-2026-1497.md) | Mar 16, 2026 | | Linux | tomcat10-jsp-3.1-api amzn 2023 | 1:10.1.52-1.amzn2023.0.1 | [ALAS2023-2026-1497](https://patchblox.com/security/data/fix/linux/alas2023-2026-1497.md) | Mar 16, 2026 | | Linux | tomcat10-lib amzn 2023 | 1:10.1.52-1.amzn2023.0.1 | [ALAS2023-2026-1497](https://patchblox.com/security/data/fix/linux/alas2023-2026-1497.md) | Mar 16, 2026 | | Linux | tomcat10-servlet-6.0-api amzn 2023 | 1:10.1.52-1.amzn2023.0.1 | [ALAS2023-2026-1497](https://patchblox.com/security/data/fix/linux/alas2023-2026-1497.md) | Mar 16, 2026 | | Linux | tomcat10-webapps amzn 2023 | 1:10.1.52-1.amzn2023.0.1 | [ALAS2023-2026-1497](https://patchblox.com/security/data/fix/linux/alas2023-2026-1497.md) | Mar 16, 2026 | | Linux | tomcat11 Debian 13.5 (trixie) | 11.0.15-1~deb13u1 | [DEBIAN-CVE-2026-24733](https://patchblox.com/security/data/fix/linux/debian-cve-2026-24733.md) | Feb 17, 2026 | | Linux | tomcat11 Debian 14 | 11.0.15-1 | [DEBIAN-CVE-2026-24733](https://patchblox.com/security/data/fix/linux/debian-cve-2026-24733.md) | Feb 17, 2026 | | Linux | tomcat11 opensuse-leap 15.6 | 11.0.18-150600.13.15.1 | [SUSE-SU-2026:0877-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0877-1.md) | Mar 12, 2026 | | Linux | tomcat11 opensuse-leap 16.0 | 11.0.18-160000.1.1 | [OPENSUSE-SU-2026:20414-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20414-1.md) | Mar 24, 2026 | | Linux | tomcat11 sles 15.6 | 11.0.18-150600.13.15.1 | [SUSE-SU-2026:0877-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0877-1.md) | Mar 12, 2026 | | Linux | tomcat11 sles 15.7 | 11.0.18-150600.13.15.1 | [SUSE-SU-2026:0877-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0877-1.md) | Mar 12, 2026 | | Linux | tomcat11 sles 16.0 | 11.0.18-160000.1.1 | [SUSE-SU-2026:20926-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20926-1.md) | Mar 24, 2026 | | Linux | tomcat9 Debian 12.15 (bookworm) | 9.0.70-2 | [DEBIAN-CVE-2026-24733](https://patchblox.com/security/data/fix/linux/debian-cve-2026-24733.md) | Feb 17, 2026 | | Linux | tomcat9 Debian 13.5 (trixie) | 9.0.70-2 | [DEBIAN-CVE-2026-24733](https://patchblox.com/security/data/fix/linux/debian-cve-2026-24733.md) | Feb 17, 2026 | | Linux | tomcat9 Debian 14 | 9.0.70-2 | [DEBIAN-CVE-2026-24733](https://patchblox.com/security/data/fix/linux/debian-cve-2026-24733.md) | Feb 17, 2026 | | Linux | tomcat9 RHEL 10 | 9.0.120-1.el10_0 | [RHSA-2026:67163](https://patchblox.com/security/data/fix/linux/rhsa-2026-67163.md) | May 27, 2026 | | Linux | tomcat9 almalinux 10 | 1:9.0.117-2.el10_2.alma.1 | [ALSA-2026:36790](https://patchblox.com/security/data/fix/linux/alsa-2026-36790.md) | Jul 8, 2026 | | Linux | tomcat9 amzn 2023 | 1:9.0.115-1.amzn2023.0.1 | [ALAS2023-2026-1496](https://patchblox.com/security/data/fix/linux/alas2023-2026-1496.md) | Mar 16, 2026 | | Linux | tomcat9 rocky 10 | 1:9.0.117-1.el10_2 | [RLSA-2026:25341](https://patchblox.com/security/data/fix/linux/rlsa-2026-25341.md) | Sep 28, 2026 | | Linux | tomcat9-admin-webapps almalinux 10 | 1:9.0.117-2.el10_2.alma.1 | [ALSA-2026:36790](https://patchblox.com/security/data/fix/linux/alsa-2026-36790.md) | Jul 8, 2026 | | Linux | tomcat9-admin-webapps amzn 2023 | 1:9.0.115-1.amzn2023.0.1 | [ALAS2023-2026-1496](https://patchblox.com/security/data/fix/linux/alas2023-2026-1496.md) | Mar 16, 2026 | | Linux | tomcat9-docs-webapp almalinux 10 | 1:9.0.117-2.el10_2.alma.1 | [ALSA-2026:36790](https://patchblox.com/security/data/fix/linux/alsa-2026-36790.md) | Jul 8, 2026 | | Linux | tomcat9-docs-webapp amzn 2023 | 1:9.0.115-1.amzn2023.0.1 | [ALAS2023-2026-1496](https://patchblox.com/security/data/fix/linux/alas2023-2026-1496.md) | Mar 16, 2026 | | Linux | tomcat9-el-3.0-api almalinux 10 | 1:9.0.117-2.el10_2.alma.1 | [ALSA-2026:36790](https://patchblox.com/security/data/fix/linux/alsa-2026-36790.md) | Jul 8, 2026 | | Linux | tomcat9-el-3.0-api amzn 2023 | 1:9.0.115-1.amzn2023.0.1 | [ALAS2023-2026-1496](https://patchblox.com/security/data/fix/linux/alas2023-2026-1496.md) | Mar 16, 2026 | | Linux | tomcat9-jsp-2.3-api almalinux 10 | 1:9.0.117-2.el10_2.alma.1 | [ALSA-2026:36790](https://patchblox.com/security/data/fix/linux/alsa-2026-36790.md) | Jul 8, 2026 | | Linux | tomcat9-jsp-2.3-api amzn 2023 | 1:9.0.115-1.amzn2023.0.1 | [ALAS2023-2026-1496](https://patchblox.com/security/data/fix/linux/alas2023-2026-1496.md) | Mar 16, 2026 | | Linux | tomcat9-lib almalinux 10 | 1:9.0.117-2.el10_2.alma.1 | [ALSA-2026:36790](https://patchblox.com/security/data/fix/linux/alsa-2026-36790.md) | Jul 8, 2026 | | Linux | tomcat9-lib amzn 2023 | 1:9.0.115-1.amzn2023.0.1 | [ALAS2023-2026-1496](https://patchblox.com/security/data/fix/linux/alas2023-2026-1496.md) | Mar 16, 2026 | | Linux | tomcat9-servlet-4.0-api almalinux 10 | 1:9.0.117-2.el10_2.alma.1 | [ALSA-2026:36790](https://patchblox.com/security/data/fix/linux/alsa-2026-36790.md) | Jul 8, 2026 | | Linux | tomcat9-servlet-4.0-api amzn 2023 | 1:9.0.115-1.amzn2023.0.1 | [ALAS2023-2026-1496](https://patchblox.com/security/data/fix/linux/alas2023-2026-1496.md) | Mar 16, 2026 | | Linux | tomcat9-webapps almalinux 10 | 1:9.0.117-2.el10_2.alma.1 | [ALSA-2026:36790](https://patchblox.com/security/data/fix/linux/alsa-2026-36790.md) | Jul 8, 2026 | | Linux | tomcat9-webapps amzn 2023 | 1:9.0.115-1.amzn2023.0.1 | [ALAS2023-2026-1496](https://patchblox.com/security/data/fix/linux/alas2023-2026-1496.md) | Mar 16, 2026 | --- Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.