Vulnerability · Published May 12, 2026 · Assigned by apache
CVE-2026-41284Apache Tomcat: Unbounded read in WebDAV LOCK and PROPFIND handling
High 7.5
In plain English
A high-severity resource allocation without limits in Apache Tomcat from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.8%top 42.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | tomcat | 1:10.1.49-4.el10_2.alma.1 | ALSA-2026:69259 |
| AlmaLinux:8 | tomcat | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:10 | tomcat-admin-webapps | 1:10.1.49-4.el10_2.alma.1 | ALSA-2026:69259 |
| AlmaLinux:8 | tomcat-admin-webapps | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-admin-webapps | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:10 | tomcat-docs-webapp | 1:10.1.49-4.el10_2.alma.1 | ALSA-2026:69259 |
| AlmaLinux:8 | tomcat-docs-webapp | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-docs-webapp | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:8 | tomcat-el-3.0-api | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-el-3.0-api | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:10 | tomcat-el-5.0-api | 1:10.1.49-4.el10_2.alma.1 | ALSA-2026:69259 |
| AlmaLinux:8 | tomcat-jsp-2.3-api | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-jsp-2.3-api | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:10 | tomcat-jsp-3.1-api | 1:10.1.49-4.el10_2.alma.1 | ALSA-2026:69259 |
| AlmaLinux:10 | tomcat-lib | 1:10.1.49-4.el10_2.alma.1 | ALSA-2026:69259 |
| AlmaLinux:8 | tomcat-lib | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-lib | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:8 | tomcat-servlet-4.0-api | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-servlet-4.0-api | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:10 | tomcat-servlet-6.0-api | 1:10.1.49-4.el10_2.alma.1 | ALSA-2026:69259 |
| AlmaLinux:10 | tomcat-webapps | 1:10.1.49-4.el10_2.alma.1 | ALSA-2026:69259 |
| AlmaLinux:8 | tomcat-webapps | 1:9.0.120-1.el8_10 | ALSA-2026:68677 |
| AlmaLinux:9 | tomcat-webapps | 1:9.0.120-2.el9_8 | ALSA-2026:68660 |
| AlmaLinux:10 | tomcat9 | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-admin-webapps | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-docs-webapp | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-el-3.0-api | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-jsp-2.3-api | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-lib | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-servlet-4.0-api | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| AlmaLinux:10 | tomcat9-webapps | 1:9.0.120-1.el10_2.alma.1 | ALSA-2026:68651 |
| Debian:12 | tomcat10 | 10.1.55-1~deb12u1 | DEBIAN-CVE-2026-41284 |
| Debian:13 | tomcat10 | 10.1.55-1~deb13u1 | DEBIAN-CVE-2026-41284 |
| Debian:14 | tomcat10 | 10.1.55-1 | DEBIAN-CVE-2026-41284 |
| Debian:13 | tomcat11 | 11.0.22-1~deb13u1 | DEBIAN-CVE-2026-41284 |
| Debian:14 | tomcat11 | 11.0.22-1 | DEBIAN-CVE-2026-41284 |
| Debian:12 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-41284 |
| Debian:13 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-41284 |
| Debian:14 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-41284 |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | 10.1.55 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | 11.0.22 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | 9.0.118 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat:tomcat | 10.1.55 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat:tomcat | 9.0.118 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat:tomcat | 11.0.22 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat:tomcat-catalina | 10.1.55 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat:tomcat-catalina | 9.0.118 | GHSA-gx5v-xp9w-j4cg |
| Maven | org.apache.tomcat:tomcat-catalina | 11.0.22 | GHSA-gx5v-xp9w-j4cg |
| Ubuntu:25.10 | tomcat10 | 10.1.40-1ubuntu1.25.10.1 | UBUNTU-CVE-2026-41284 |
| Ubuntu:26.04:LTS | tomcat10 | 10.1.40-1ubuntu1.26.04.1 | UBUNTU-CVE-2026-41284 |
| Ubuntu:25.10 | tomcat11 | no fix listed | UBUNTU-CVE-2026-41284 |
| Ubuntu:25.10 | tomcat9 | 9.0.95-1ubuntu1.1 | UBUNTU-CVE-2026-41284 |
| Ubuntu:26.04:LTS | tomcat9 | 9.0.115-1ubuntu0.1 | UBUNTU-CVE-2026-41284 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 – through 11.0.2110.1.0-M1 – through 10.1.549.0.0.M1 – through 9.0.11710.0.0-M1 – through 10.0.278.5.0 – through 8.5.1004.0 – through 7.0.109 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H