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Vulnerabilities

Vulnerability · CVE-2026-18661

In Eclipse Jetty, across various versions of , and , the Jakarta Spec authoritative url-pattern rules for mixed annotation, and defined on the same were not being applied if the ha

Published Oct 15, 2026 · catalog updated Oct 17, 2026 · Eclipse Foundation

Check if you run it

No confirmed exploitation is on record for CVE-2026-18661. EPSS is 0.34%. Act only if a listed version of Eclipse Foundation is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.34%
Remediation
Advisory link
Affected products
Debian:12 jetty9 · Debian:13 jetty12 · Debian:13 jetty9 · Debian:14 jetty12 · Debian:14 jetty9 · vendor Eclipse Foundation

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 jetty99.4.50-4, 9.4.50-4+deb12u1, 9.4.50-4+deb12u2
  • Debian:13 jetty1212.0.17-3, 12.0.17-3.1, 12.0.17-3.1~deb13u1
  • Debian:13 jetty99.4.57-1, 9.4.57-1.1, 9.4.57-1.1~deb12u1
  • Debian:14 jetty1212.0.17-3, 12.0.17-3.1, 12.0.17-3.1~deb13u1
  • Debian:14 jetty99.4.57-1, 9.4.57-1.1, 9.4.57-1.1~deb12u1
  • vendor Eclipse Foundationversion unspecified

How to fix CVE-2026-18661

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-18661. EPSS is 0.34%. Act only if a listed version of Eclipse Foundation is installed.

Which versions are affected?

Compare what you have installed with 9.4.50-4, 9.4.50-4+deb12u1, 9.4.50-4+deb12u2, 12.0.17-3, 12.0.17-3.1, 12.0.17-3.1~deb13u1, 9.4.57-1, 9.4.57-1.1, 9.4.57-1.1~deb12u1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-863: Incorrect Authorization. EPSS 0.34%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 15, 2026 · NIST NVD

    Detected

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

  2. Oct 15, 2026 · CVE.org

    Updated

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

  3. Oct 15, 2026 · NIST NVD

    Updated

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

  4. Oct 15, 2026 · NIST NVD

    Updated

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

  5. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Updated

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

Sources

  • CIRCL Vulnerability LookupVulnerability recordCVE-2026-18661

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

    vulnerability.circl.lu
  • CVE.orgVulnerability recordCVE-2026-18661

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

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-18661

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-18661

    In Eclipse Jetty, across various versions of , and , the Jakarta Spec authoritative url-pattern rules for mixed annotation, and defined on the same were not being applied if

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-18661
    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.