Allocation of Resources Without Limits or Throttling Affecting io.quarkus.vertx.utils:quarkus-vertx-utils package, versions [,3.20.5)[3.21.0.CR1,3.27.2)[3.28.0.CR1,3.31.0)
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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- published8 Jan 2026
- disclosed7 Jan 2026
- creditShaswata Jash
Introduced: 7 Jan 2026
CVE-2025-66560 (opens in a new tab)How to fix?
Upgrade io.quarkus.vertx.utils:quarkus-vertx-utils to version 3.20.5, 3.27.2, 3.31.0 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to the indefinite wait() state in the HTTP response handling process. An attacker can cause worker threads to become permanently blocked by repeatedly closing HTTP connections while the server is waiting to write response data. This can lead to exhaustion of available worker threads, resulting in degraded performance or complete unavailability of the application.
##Workaround
This vulnerability can be mitigated by implementing a health check that monitors the status and saturation of the worker thread pool to detect abnormal thread retention early.