Description
Allocation of Resources Without Limits or Throttling vulnerability in Apache Tomcat.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117.
Older, unsupported versions may also be affected.
Users are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 – ≤ 11.0.21, 10.1.0-M1 – ≤ 10.1.54, 9.0.0.M1 – ≤ 9.0.117, 10.0.0-M1 – ≤ 10.0.27, 8.5.0 – ≤ 8.5.100, 4.0 – ≤ 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 | 10.1.55-1 | — |
| Debian 14 | tomcat11 | 11.0.22-1 | — |
| Debian 14 | tomcat9 | 9.0.70-2 | — |
| Debian 13 | tomcat10 | 10.1.55-1~deb13u1 | — |
| Debian 13 | tomcat11 | 11.0.22-1~deb13u1 | — |
| Debian 13 | tomcat9 | 9.0.70-2 | — |
| Debian 12 | tomcat10 | 10.1.55-1~deb12u1 | — |
| Debian 12 | tomcat9 | 9.0.70-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | tomcat10 | 10.1.40-1ubuntu1.26.04.1 | — |
| Ubuntu 26.04 LTS | tomcat9 | 9.0.115-1ubuntu0.1 | — |
| Ubuntu 25.10 | tomcat10 | 10.1.40-1ubuntu1.25.10.1 | — |
| Ubuntu 25.10 | tomcat11 | No fix yet | — |
| Ubuntu 25.10 | tomcat9 | 9.0.95-1ubuntu1.1 | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | tomcat11 | 11.0.18-1ubuntu0.1~esm1 | USN-8450-1 |
| Ubuntu Pro 24.04 LTS | tomcat10 | 10.1.16-1ubuntu0.1~esm4 | — |
| Ubuntu Pro 24.04 LTS | tomcat9 | 9.0.70-2ubuntu0.1+esm3 | — |
| Ubuntu Pro 22.04 LTS | tomcat9 | 9.0.58-1ubuntu0.2+esm4 | — |
| Ubuntu Pro 20.04 LTS | tomcat9 | 9.0.31-1ubuntu0.9+esm3 | — |
| Ubuntu Pro 18.04 LTS | tomcat9 | 9.0.16-3ubuntu0.18.04.2+esm8 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | tomcat9 +7 | 1:9.0.120-1.el10_2 | RHSA-2026:68651 |
| RHEL 9 | tomcat +7 | 1:9.0.120-2.el9_8 | RHSA-2026:68660 |
| RHEL 8 | tomcat +7 | 1:9.0.120-1.el8_10 | RHSA-2026:68677 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | tomcat9 +7 | 1:9.0.120-1.el10_0 | RHSA-2026:67163 |
| RHEL 9.6 EUS | tomcat +7 | 1:9.0.120-1.el9_6 | RHSA-2026:68659 |
| RHEL 9.4 E4S | tomcat +7 | 1:9.0.120-1.el9_4 | RHSA-2026:68679 |
| RHEL 9.2 E4S | tomcat +7 | 1:9.0.120-1.el9_2 | RHSA-2026:68678 |
| RHEL 8.8 TUS | tomcat +7 | 1:9.0.120-1.el8_8 | RHSA-2026:68680 |
| RHEL 8.8 E4S | tomcat +7 | 1:9.0.120-1.el8_8 | RHSA-2026:68680 |
| Red Hat JBoss Web Server 7 | jws7-tomcat +9 | 11.0.21-5.redhat_00004.1.el8jws | RHSA-2026:39188 |
| Red Hat JBoss Web Server 6 | jws6-tomcat +9 | 10.1.49-15.redhat_00013.1.el8jws | RHSA-2026:43401 |
| 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 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | tomcat +7 | 1:10.1.49-4.el10_2.alma.1 | ALSA-2026:69259 |
| AlmaLinux 10 | tomcat9 +7 | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux 9 | tomcat +7 | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux 8 | tomcat +7 | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | tomcat | 9.0.118-150200.108.1 | SUSE-SU-2026:2675-1 |
| SLES 15 SP7 | tomcat10 | 10.1.55-150200.5.67.1 | SUSE-SU-2026:2377-1 |
| SLES 15 SP7 | tomcat11 | 11.0.22-150600.13.21.1 | SUSE-SU-2026:2374-1 |
| SLES 15 SP6 | tomcat | 9.0.118-150200.108.1 | SUSE-SU-2026:2675-1 |
| SLES 15 SP6 | tomcat10 | 10.1.55-150200.5.67.1 | SUSE-SU-2026:2377-1 |
| SLES 15 SP6 | tomcat11 | 11.0.22-150600.13.21.1 | SUSE-SU-2026:2374-1 |
| SLES 15 SP5 | tomcat | 9.0.118-150200.108.1 | SUSE-SU-2026:2675-1 |
| SLES 15 SP5 | tomcat10 | 10.1.55-150200.5.67.1 | SUSE-SU-2026:2377-1 |
| SLES 15 SP4 | tomcat | 9.0.118-150200.108.1 | SUSE-SU-2026:2675-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | tomcat | 9.0.118-160000.1.1 | SUSE-SU-2026:22195-1 |
| SLES for SAP 16.0 | tomcat10 | 10.1.55-160000.1.1 | SUSE-SU-2026:22197-1 |
| SLES for SAP 16.0 | tomcat11 | 11.0.22-160000.1.1 | SUSE-SU-2026:22196-1 |
| SLES for SAP 15 SP6 | tomcat | 9.0.118-150200.108.1 | SUSE-SU-2026:2675-1 |
| SLES for SAP 15 SP6 | tomcat10 | 10.1.55-150200.5.67.1 | SUSE-SU-2026:2377-1 |
| SLES for SAP 15 SP6 | tomcat11 | 11.0.22-150600.13.21.1 | SUSE-SU-2026:2374-1 |
| SLES for SAP 15 SP5 | tomcat | 9.0.118-150200.108.1 | SUSE-SU-2026:2675-1 |
| SLES for SAP 15 SP5 | tomcat10 | 10.1.55-150200.5.67.1 | SUSE-SU-2026:2377-1 |
| SLES for SAP 15 SP4 | tomcat | 9.0.118-150200.108.1 | SUSE-SU-2026:2675-1 |
| SLES 16.0 | tomcat | 9.0.118-160000.1.1 | SUSE-SU-2026:22195-1 |
| SLES 16.0 | tomcat10 | 10.1.55-160000.1.1 | SUSE-SU-2026:22197-1 |
| SLES 16.0 | tomcat11 | 11.0.22-160000.1.1 | SUSE-SU-2026:22196-1 |
| SLE HPC 15 SP5 | tomcat | 9.0.118-150200.108.1 | SUSE-SU-2026:2675-1 |
| SLE HPC 15 SP5 | tomcat10 | 10.1.55-150200.5.67.1 | SUSE-SU-2026:2377-1 |
| SLE HPC 15 SP4 | tomcat | 9.0.118-150200.108.1 | SUSE-SU-2026:2675-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tomcat | 9.0.118-1.1 | openSUSE-SU-2026:10925-1 |
| openSUSE Tumbleweed | tomcat10 | 10.1.55-1.1 | openSUSE-SU-2026:10926-1 |
| openSUSE Tumbleweed | tomcat11 | 11.0.22-1.1 | openSUSE-SU-2026:10927-1 |
| openSUSE Leap 16.0 | tomcat | 9.0.118-160000.1.1 | openSUSE-SU-2026:21117-1 |
| openSUSE Leap 16.0 | tomcat10 | 10.1.55-160000.1.1 | openSUSE-SU-2026:21122-1 |
| openSUSE Leap 16.0 | tomcat11 | 11.0.22-160000.1.1 | openSUSE-SU-2026:21121-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | tomcat10 +7 | 1:10.1.55-1.amzn2023.0.1 | ALAS2023-2026-1776 |
| Amazon Linux 2023 | tomcat9 +7 | 1:9.0.118-1.amzn2023.0.1 | ALAS2023-2026-1770 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | thingsboard-tb-node +1 | 4.3.1.2-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.tomcat:tomcat | < 9.0.118 | 9.0.118 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat:tomcat | >= 10.1.0-M1, < 10.1.55 | 10.1.55 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat:tomcat | >= 11.0.0-M1, < 11.0.22 | 11.0.22 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat:tomcat-catalina | < 9.0.118 | 9.0.118 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat:tomcat-catalina | >= 10.1.0-M1, < 10.1.55 | 10.1.55 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat:tomcat-catalina | >= 11.0.0-M1, < 11.0.22 | 11.0.22 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | < 9.0.118 | 9.0.118 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | >= 10.1.0-M1, < 10.1.55 | 10.1.55 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | >= 11.0.0-M1, < 11.0.22 | 11.0.22 | GHSA-gx5v-xp9w-j4cg |
Advisories 36
- WID-SEC-2026-1514 Apache Tomcat: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- WID-SEC-2026-2923 Atlassian Produkte (Bamboo, Bitbucket, Confluence, Crucible, Fisheye, und Jira): Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 8, 2026
- ALSA-2026:68660 Moderate: tomcat security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:68651 Moderate: tomcat9 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:69259 Moderate: tomcat update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:68677 Important: tomcat security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2455 Oracle Solaris Drittanbieterkomponenten: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2026
- RHSA-2026:68680 Red Hat Security Advisory: tomcat security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:68679 Red Hat Security Advisory: tomcat security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:68678 Red Hat Security Advisory: tomcat security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:68677 Red Hat Security Advisory: tomcat security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:68659 Red Hat Security Advisory: tomcat security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:68660 Red Hat Security Advisory: tomcat security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:68651 Red Hat Security Advisory: tomcat9 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:67163 Red Hat Security Advisory: tomcat9 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:43401 Red Hat Security Advisory: Red Hat JBoss Web Server 6.2.4 release and security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:39188 Red Hat Security Advisory: Red Hat JBoss Web Server 7.0.0 security release Red Hat Security Advisories (RHSA) · Oct 17, 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
- WID-SEC-2026-1955 Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira und Jira Service Management: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 23, 2026
- NCSC-2026-0325 Kwetsbaarheden verholpen in Atlassian producten NCSC-NL (Netherlands) · Aug 24, 2026
- openSUSE-SU-2026:21121-1 Security update for tomcat11 SUSE / openSUSE Security Updates · Jun 30, 2026
- openSUSE-SU-2026:21122-1 Security update for tomcat10 SUSE / openSUSE Security Updates · Jun 30, 2026
- openSUSE-SU-2026:21117-1 Security update for tomcat SUSE / openSUSE Security Updates · Jun 30, 2026
- SUSE-SU-2026:2675-1 Security update for tomcat SUSE / openSUSE Security Updates · Jun 30, 2026
- SUSE-SU-2026:22195-1 Security update for tomcat SUSE / openSUSE Security Updates · Jun 24, 2026
- SUSE-SU-2026:22196-1 Security update for tomcat11 SUSE / openSUSE Security Updates · Jun 24, 2026
- SUSE-SU-2026:22197-1 Security update for tomcat10 SUSE / openSUSE Security Updates · Jun 24, 2026
- USN-8450-1 tomcat11 vulnerabilities Ubuntu Security Notices (USN) · Jun 18, 2026
- SUSE-SU-2026:2374-1 Security update for tomcat11 SUSE / openSUSE Security Updates · Jun 12, 2026
- SUSE-SU-2026:2377-1 Security update for tomcat10 SUSE / openSUSE Security Updates · Jun 12, 2026
- ALAS2023-2026-1776 Important: tomcat10 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jun 8, 2026
- openSUSE-SU-2026:10925-1 tomcat-9.0.118-1.1 on GA media SUSE / openSUSE Security Updates · Jun 2, 2026
- openSUSE-SU-2026:10926-1 tomcat10-10.1.55-1.1 on GA media SUSE / openSUSE Security Updates · Jun 2, 2026
- openSUSE-SU-2026:10927-1 tomcat11-11.0.22-1.1 on GA media SUSE / openSUSE Security Updates · Jun 2, 2026
- ALAS2023-2026-1770 Important: tomcat9 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · May 25, 2026
References
- https://lists.apache.org/thread/2nvqjr7ovjmvx2vbhb7s61ycd5msc8qc vendor-advisory