CVE-2026-18661

jetty12: In Eclipse Jetty, across various versions of `jetty-annotations`, and `jetty-eeN-annotations`, the Jakarta Spec autho...

CVE-2026-18661 is fixed in jetty12 on 1 platform by DEBIAN-CVE-2026-18661 (version 12.0.39-1), released November 4, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0042
36th percentile

In Eclipse Jetty, across various versions of `jetty-annotations`, and `jetty-eeN-annotations`, the Jakarta Spec authoritative url-pattern rules for mixed `@ServletSecurity` annotation, and `web.xml` defined `security-constraint` on the same `url-pattern` were not being applied if the `web.xml` had more than 1 `url-pattern` for a servlet, and had a `security-constraint` applying to only some of those `url-pattern` definitions.

Where it's fixed

ProductFixed inFixReleased
Linux
jetty12 · Debian 14 12.0.39-1 DEBIAN-CVE-2026-18661 Nov 4, 2026

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