Allocation of Resources Without Limits or Throttling Affecting io.netty:netty-codec-mqtt package, versions [,4.1.133.Final)[4.2.0.Alpha1,4.2.13.Final)
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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- published7 May 2026
- disclosed7 May 2026
- creditChris Vest
Introduced: 7 May 2026
NewCVE-2026-44248 (opens in a new tab)How to fix?
Upgrade io.netty:netty-codec-mqtt to version 4.1.133.Final, 4.2.13.Final or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to the lack of size limits applied to the Properties section during the decoding process. An attacker can cause excessive CPU and memory consumption by sending MQTT messages with extremely large Properties sections.