CVE-2026-1605

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-05 · updated 2026-08-27
Weakness: CWE-400

Description

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.

Affected products

The Eclipse Foundation Eclipse Jetty: from 12.0.0 before 12.0.32; from 12.1.0 before 12.1.6 — fixed in 12.0.32, 12.1.6

How to fix

Upgrade to a fixed version: The Eclipse Foundation Eclipse Jetty 12.0.32, 12.1.6. Check the vendor advisory for mitigations.

References

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