Description
Improper Handling of Exceptional Conditions, Uncontrolled Resource Consumption vulnerability in Apache Tomcat. When processing an HTTP/2 stream, Tomcat did not handle some cases of excessive HTTP headers correctly. This led to a miscounting of active HTTP/2 streams which in turn led to the use of an incorrect infinite timeout which allowed connections to remain open which should have been closed.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M20, from 10.1.0-M1 through 10.1.24, from 9.0.0-M1 through 9.0.89.
The following versions were EOL at the time the CVE was created but are
known to be affected: 8.5.0 though 8.5.100. Other EOL versions may also be affected.
Users are recommended to upgrade to version 11.0.0-M21, 10.1.25 or 9.0.90, which fixes the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 – ≤ 11.0.0-M20, 10.1.0-M1 – ≤ 10.1.24, 9.0.0-M1 – ≤ 9.0.89, 8.5.0 – ≤ 8.5.100 | — |
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 | 10.1.25-1 | — |
| Debian 14 | tomcat9 | 9.0.70-2 | — |
| Debian 13 | tomcat10 | 10.1.25-1 | — |
| Debian 13 | tomcat9 | 9.0.70-2 | — |
| Debian 12 | tomcat10 | 10.1.34-0+deb12u1 | DSA-5845-1 |
| Debian 12 | tomcat9 | 9.0.70-2 | — |
| Debian 11 | tomcat9 | 9.0.107-0+deb11u1 | DLA-4244-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | tomcat9 | 9.0.70-2ubuntu3 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | tomcat10 | 10.1.16-1ubuntu0.1~esm2 | USN-7562-1 |
| Ubuntu Pro 24.04 LTS | tomcat9 | 9.0.70-2ubuntu0.1+esm2 | USN-7562-1 |
| Ubuntu Pro 22.04 LTS | tomcat9 | 9.0.58-1ubuntu0.2+esm3 | USN-7562-1 |
| Ubuntu Pro 20.04 LTS | tomcat9 | 9.0.31-1ubuntu0.9+esm2 | USN-7562-1 |
| Ubuntu Pro 18.04 LTS | tomcat8 | 8.5.39-1ubuntu1~18.04.3+esm5 | USN-7562-1 |
| Ubuntu Pro 18.04 LTS | tomcat9 | 9.0.16-3ubuntu0.18.04.2+esm7 | USN-7562-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | tomcat9 +7 | 1:9.0.110-2.el10_2 | RHSA-2026:18536 |
| RHEL 9 | tomcat +7 | 1:9.0.87-1.el9_4.2 | RHSA-2024:5693 |
| RHEL 8 | tomcat +7 | 1:9.0.87-1.el8_10.2 | RHSA-2024:5694 |
Show 5 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 9.2 EUS | tomcat +7 | 1:9.0.87-1.el9_2.2 | RHSA-2024:5696 |
| RHEL 8.8 EUS | tomcat +7 | 1:9.0.87-1.el8_8.3 | RHSA-2024:5695 |
| Red Hat JBoss Web Server 6 | jws6-tomcat +9 | 10.1.8-10.redhat_00018.1.el8jws | RHSA-2024:4976 |
| Red Hat JBoss Web Server 5 | jws5-tomcat +11 | 9.0.87-5.redhat_00005.1.el7jws | RHSA-2024:5024 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | tomcat +7 | 1:9.0.87-1.el9_4.2 | ALSA-2024:5693 |
| AlmaLinux 8 | tomcat +7 | 1:9.0.87-1.el8_10.2 | ALSA-2024:5694 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | tomcat | 1:9.0.87-1.el9_4.2 | RLSA-2024:5693 |
| Rocky Linux 8 | tomcat | 1:9.0.87-1.el8_10.2 | RLSA-2024:5694 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| SLES 15 SP6 | tomcat10 | 10.1.25-150200.5.25.1 | SUSE-SU-2024:2413-1 |
| SLES 15 SP5 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| SLES 15 SP5 | tomcat10 | 10.1.25-150200.5.25.1 | SUSE-SU-2024:2413-1 |
| SLES 15 SP4 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| SLES 15 SP3 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| SLES 15 SP2 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | tomcat | 9.0.36-3.127.1 | SUSE-SU-2026:1058-1, SUSE-SU-2024:2539-1 |
| SLES for SAP 15 SP4 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| SLES for SAP 15 SP3 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| SLES for SAP 15 SP2 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| SLES for SAP 12 SP5 | tomcat | 9.0.36-3.127.1 | SUSE-SU-2024:2539-1 |
| SLE HPC 15 SP4 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| SLE HPC 15 SP3 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| SLE HPC 15 SP2 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| SUSE Manager Server 4.3 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| SUSE Enterprise Storage 7.1 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tomcat | 9.0.91-1.1 | openSUSE-SU-2024:14119-1 |
| openSUSE Tumbleweed | tomcat10 | 10.1.25-1.1 | openSUSE-SU-2024:14120-1 |
| openSUSE Leap 15.6 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| openSUSE Leap 15.6 | tomcat10 | 10.1.25-150200.5.25.1 | SUSE-SU-2024:2413-1 |
| openSUSE Leap 15.5 | tomcat | 9.0.91-150200.68.1 | SUSE-SU-2024:2485-1 |
| openSUSE Leap 15.5 | tomcat10 | 10.1.25-150200.5.25.1 | SUSE-SU-2024:2413-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | tomcat9 +7 | 1:9.0.90-1.amzn2023.0.2 | ALAS2023-2024-661 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | tomcat +7 | 1:9.0.87-1.el9_4.2 | ELSA-2024-5693 |
| Oracle Linux 8 | tomcat +7 | 1:9.0.87-1.el8_10.2 | ELSA-2024-5694 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | thingsboard-tb-mqtt-transport | 4.2.1-r7 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.tomcat:tomcat-coyote | >= 11.0.0-M1, < 11.0.0-M21 | 11.0.0-M21 | GHSA-wm9w-rjj3-j356 |
| Maven | org.apache.tomcat:tomcat-coyote | >= 10.1.0-M1, < 10.1.25 | 10.1.25 | GHSA-wm9w-rjj3-j356 |
| Maven | org.apache.tomcat:tomcat-coyote | >= 9.0.0-M1, < 9.0.90 | 9.0.90 | GHSA-wm9w-rjj3-j356 |
| Maven | org.apache.tomcat:tomcat-coyote | >= 8.5.0, <= 8.5.100 | — | GHSA-wm9w-rjj3-j356 |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | >= 11.0.0-M1, < 11.0.0-M21 | 11.0.0-M21 | GHSA-wm9w-rjj3-j356 |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | >= 10.1.0-M1, < 10.1.25 | 10.1.25 | GHSA-wm9w-rjj3-j356 |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | >= 9.0.0-M1, < 9.0.90 | 9.0.90 | GHSA-wm9w-rjj3-j356 |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | >= 8.5.0, <= 8.5.100 | — | GHSA-wm9w-rjj3-j356 |
Advisories 41
- ALSA-2024:5694 Important: tomcat security update AlmaLinux Security Advisories · Nov 6, 2026
- ALSA-2024:5693 Important: tomcat security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:67163 Red Hat Security Advisory: tomcat9 security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:18536 Red Hat Security Advisory: tomcat9 security update Red Hat Security Advisories (RHSA) · Oct 9, 2026
- RHSA-2024:5696 Red Hat Security Advisory: tomcat security update Red Hat Security Advisories (RHSA) · Sep 26, 2026
- RHSA-2024:5695 Red Hat Security Advisory: tomcat security update Red Hat Security Advisories (RHSA) · Sep 26, 2026
- RHSA-2024:5693 Red Hat Security Advisory: tomcat security update Red Hat Security Advisories (RHSA) · Sep 26, 2026
- RHSA-2024:5694 Red Hat Security Advisory: tomcat security update Red Hat Security Advisories (RHSA) · Sep 26, 2026
- RHSA-2024:5024 Red Hat Security Advisory: Red Hat JBoss Web Server 5.8.1 release and security update Red Hat Security Advisories (RHSA) · Sep 26, 2026
- RHSA-2024:4976 Red Hat Security Advisory: Red Hat JBoss Web Server 6.0.3 release and security update Red Hat Security Advisories (RHSA) · Sep 26, 2026
- WID-SEC-2024-1522 Apache Tomcat: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Sep 17, 2026
- WID-SEC-2025-0148 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- WID-SEC-2024-3195 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- USN-7562-1 tomcat vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- SUSE-SU-2026:1058-1 Security update for tomcat SUSE / openSUSE Security Updates · Mar 27, 2026
- DSA-5845-1 tomcat10 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4244-1 tomcat9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2024:5693 Important: tomcat security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2024:5694 Important: tomcat security update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2024:2485-1 Security update for tomcat SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2539-1 Security update for tomcat SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2413-1 Security update for tomcat10 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14120-1 tomcat10-10.1.25-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14119-1 tomcat-9.0.91-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-0143 Oracle Fusion Middleware: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 17, 2025
- WID-SEC-2024-1905 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 3, 2025
- NCSC-2025-0027 Kwetsbaarheden verholpen in Oracle Fusion Middleware NCSC-NL (Netherlands) · Jan 22, 2025
- NCSC-2025-0025 Kwetsbaarheden verholpen in Oracle Financial Services NCSC-NL (Netherlands) · Jan 22, 2025
- NCSC-2025-0021 Kwetsbaarheden verholpen in Oracle Communications NCSC-NL (Netherlands) · Jan 22, 2025
- WID-SEC-2025-0163 Oracle Supply Chain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 21, 2025
- WID-SEC-2025-0161 Oracle Utilities Applications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 21, 2025
- WID-SEC-2025-0144 Oracle Financial Services Applications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 21, 2025
- NCSC-2024-0466 Kwetsbaarheden verholpen in Atlassian producten NCSC-NL (Netherlands) · Dec 6, 2024
- NCSC-2024-0414 Kwetsbaarheden verholpen in Oracle Communications NCSC-NL (Netherlands) · Oct 17, 2024
- NCSC-2024-0413 Kwetsbaarheden verholpen in Oracle Commerce NCSC-NL (Netherlands) · Oct 17, 2024
- NCSC-2024-0411 Kwetsbaarheden verholpen in Oracle Database producten NCSC-NL (Netherlands) · Oct 17, 2024
- WID-SEC-2024-3197 Oracle Commerce: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 15, 2024
- WID-SEC-2024-2100 IBM Power Hardware Management Console: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 10, 2024
- ELSA-2024-5693 Important: tomcat security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 21, 2024
- ELSA-2024-5694 Important: tomcat security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 21, 2024
- ALAS2023-2024-661 Important: tomcat9 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jul 22, 2024
References
- https://lists.apache.org/thread/4kqf0bc9gxymjc2x7v3p7dvplnl77y8l vendor-advisory