Memory Allocation with Excessive Size Value Affecting org.apache.qpid:proton-j package, versions [,0.35.0)
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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- published27 Aug 2026
- disclosed5 Aug 2026
- creditUnknown
Introduced: 5 Aug 2026
NewCVE-2026-66273 (opens in a new tab)How to fix?
Upgrade org.apache.qpid:proton-j to version 0.35.0 or higher.
Overview
org.apache.qpid:proton-j is a lightweight messaging library.
Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value via improper handling of type size and count during the allocation process. An attacker can trigger excessive memory allocation by sending specially crafted input prior to authentication, potentially leading to resource exhaustion and service disruption.