What’s Vulnerable › Vulnerabilities

CVE-2026-18661

• Severity: high (CVSS 8.8 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-15 · updated 2026-10-15
• Weakness: CWE-863

Description

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.

Affected products

• Eclipse Foundation org.eclipse.jetty.ee10:jetty-ee10-annotations: from 12.1.0 through 12.1.11; from 12.0.0 through 12.0.38
• Eclipse Foundation org.eclipse.jetty.ee11:jetty-ee11-annotations: from 12.1.0 through 12.1.11
• Eclipse Foundation org.eclipse.jetty.ee8:jetty-ee8-annotations: from 12.1.0 through 12.1.11; from 12.0.0 through 12.0.38
• Eclipse Foundation org.eclipse.jetty.ee9:jetty-ee9-annotations: from 12.1.0 through 12.1.11; from 12.0.0 through 12.0.38
• Eclipse Foundation org.eclipse.jetty:jetty-annotations: from 11.0.0 through 11.0.32; from 10.0.0 through 10.0.32; from 9.4.0 through 9.4.64

References

• https://github.com/jetty/jetty.project/security/advisories/GHSA-v6xf-996f-c35f
• https://gitlab.eclipse.org/security/cve-assignment/-/work_items/211
• https://github.com/jetty/jetty.project/security/advisories/GHSA-v6xf-996f-c35f

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