CVE-2026-41284
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Apache Tomcat
PublishedMay 12, 2026
First seenMay 12, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- apache tomcat9.0.118, 10.1.55, 11.0.22 or later
- org.apache.tomcat.embed:tomcat-embed-core9.0.118, 10.1.55, 11.0.22 or later
- org.apache.tomcat:tomcat9.0.118, 10.1.55, 11.0.22 or later
- org.apache.tomcat:tomcat-catalina9.0.118, 10.1.55, 11.0.22 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache tomcat | 4.0.0 ≤ v ≤ 7.0.109, 8.5.0 ≤ v ≤ 8.5.100, 9.0.0 ≤ v < 9.0.118, 10.0.0 ≤ v ≤ 10.0.27, 10.1.0 ≤ v < 10.1.55, 11.0.0 ≤ v < 11.0.22 | 9.0.118, 10.1.55, 11.0.22 |
| org.apache.tomcat.embed:tomcat-embed-coreMaven | v < 9.0.118, 10.1.0-M1 ≤ v < 10.1.55, 11.0.0-M1 ≤ v < 11.0.22 | 9.0.118, 10.1.55, 11.0.22 |
| org.apache.tomcat:tomcatMaven | v < 9.0.118, 10.1.0-M1 ≤ v < 10.1.55, 11.0.0-M1 ≤ v < 11.0.22 | 9.0.118, 10.1.55, 11.0.22 |
| org.apache.tomcat:tomcat-catalinaMaven | v < 9.0.118, 10.1.0-M1 ≤ v < 10.1.55, 11.0.0-M1 ≤ v < 11.0.22 | 9.0.118, 10.1.55, 11.0.22 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.