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.

The remote Redhat Enterprise Linux 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:25125 advisory.

    Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly     application runtime.

    This asynchronous patch is an update for Red Hat JBoss Enterprise Application Platform 8.1. See Release     Notes for information about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * jetty-server: Eclipse Jetty: Denial of Service due to unreleased JDK Inflater from compressed HTTP     requests important (CVE-2026-1605)

    * undertow-core: Undertow: Request Smuggling via Malformed HTTP Request Headers (CVE-2026-28369)

    * undertow-core: Undertow: Request smuggling via inconsistent header parsing (CVE-2026-28368)

    * undertow-core: Undertow: Request smuggling via `\r\r\r` as a header block terminator (CVE-2026-28367)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-1605)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-1605)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
320509	RHEL 8 / 9 : Red Hat JBoss Enterprise Application Platform 8.1.6 (RHSA-2026:25125)	Nessus	Red Hat Local Security Checks	critical
438426	SCA: security update for org.eclipse.jetty:jetty-server (GHSA-xxh7-fcf3-rj7f)	Tenable Cloud Security	SCA Checks	high
438426	SCA: security update for org.eclipse.jetty:jetty-server (GHSA-xxh7-fcf3-rj7f)	Tenable Self-Hosted Container Security	SCA Checks	high
301140	Linux Distros Unpatched Vulnerability : CVE-2026-1605	Nessus	Misc.	high

Detections

Analytics

CVE-2026-1605

high

Tenable Plugins

critical

high

high

high