Allocation of Resources Without Limits or Throttling Affecting org.apache.tomcat:tomcat-coyote package, versions [9.0.0.M1, 9.0.107)[10.1.0-M1, 10.1.43)[11.0.0-M1, 11.0.9)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published11 Jul 2025
- disclosed30 Jun 2025
- creditKanatoko
Introduced: 30 Jun 2025
NewCVE-2025-53506 (opens in a new tab)How to fix?
Upgrade org.apache.tomcat:tomcat-coyote to version 9.0.107, 10.1.43, 11.0.9 or higher.
Overview
org.apache.tomcat:tomcat-coyote is a Tomcat Connectors and HTTP parser.
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via HTTP/2 multiplexing feature. an attacker can trigger resource exhaustion by creating excessive HTTP/2 streams within a single TCP connection.