Allocation of Resources Without Limits or Throttling Affecting org.apache.tomcat.embed:tomcat-embed-core package, versions [7.0.0,9.0.122)[10.1.0-M1,10.1.59)[11.0.0-M1,11.0.26)
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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- published26 Oct 2026
- disclosed23 Sept 2026
- creditUnknown
Introduced: 23 Sep 2026
CVE-2026-78383 (opens in a new tab)How to fix?
Upgrade org.apache.tomcat.embed:tomcat-embed-core to version 9.0.122, 10.1.59, 11.0.26 or higher.
Overview
org.apache.tomcat.embed:tomcat-embed-core is a Core Tomcat implementation.
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the AjpProcessor in the AJP connector. An unauthenticated attacker can pin an AJP processing thread and cause denial of service by triggering an error response for an AJP request that declares or expects a body but does not provide it; while finishing the response, the processor waits to consume the unread body.