Jetty GzipHandler resource leak before v12.0.31/12.1.0 due to JDK Inflater
CVE-2026-1605 Published on March 5, 2026
In Eclipse Jetty, versions 12.0.0-12.0.31 and 12.1.0-12.0.5, class GzipHandler exposes a vulnerability when a compressed HTTP request, with Content-Encoding: gzip, is processed and the corresponding response is not compressed. This happens because the JDK Inflater is allocated for decompressing the request, but it is not released because the release mechanism is tied to the compressed response. In this case, since the response is not compressed, the release mechanism does not trigger, causing the leak.
Vulnerability Analysis
CVE-2026-1605 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Types
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2026-1605 has been classified to as a Resource Exhaustion vulnerability or weakness.
What is a Memory Leak Vulnerability?
The software does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is often triggered by improper handling of malformed data or unexpectedly interrupted sessions. In some languages, developers are responsible for tracking memory allocation and releasing the memory. If there are no more pointers or references to the memory, then it can no longer be tracked and identified for release.
CVE-2026-1605 has been classified to as a Memory Leak vulnerability or weakness.
Products Associated with CVE-2026-1605
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Affected Versions
Eclipse Foundation Eclipse Jetty:- Version 12.0.0, <= 12.0.31 is affected.
- Version 12.1.0., <= 12.1.5 is affected.