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  4. CVE 2026 18660 jetty proxy blacklist performs case sensitive
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Back to active CVEs
High · CVSS 8.8CVE-2026-18660

Jetty proxy blacklist performs case-sensitive matching of case-insensitive DNS hostnamesCVE-2026-18660

Answer in brief

CVE-2026-18660 records a High severity (CVSS 8.8) vulnerability in Jetty proxy blacklist performs case-sensitive matching of case-insensitive DNS hostnames. The current sources do not mark it as known exploited. The current feed maps Eclipse Foundation/org.eclipse.jetty:jetty-proxy (generic), Eclipse Foundation/org.eclipse.jetty:jetty-server (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 15, 2026Updated Oct 15, 2026Source checked Oct 15, 2026First seen by HOL Oct 15, 2026Material review Oct 15, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Eclipse Foundation/org.eclipse.jetty:jetty-proxy (generic), Eclipse Foundation/org.eclipse.jetty:jetty-server (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Eclipse Foundation/org.eclipse.jetty:jetty-proxygeneric>=11.0.0 <=11.0.32 || >=10.0.0 <=10.0.32 || >=9.0.0 <=9.4.64Not reported
Eclipse Foundation/org.eclipse.jetty:jetty-servergeneric>=12.1.0 <=12.1.11 || >=12.0.0 <=12.0.38Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Eclipse Foundation/org.eclipse.jetty:jetty-proxy, Eclipse Foundation/org.eclipse.jetty:jetty-server.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 15, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencegitlab.eclipse.org
Upstream source description

In Eclipse Jetty, across various versions of `jetty-server`, and `jetty-proxy`, the host whitelist/blacklist is case-sensitive, and would allow hosts through that only differ by case.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • SSRF in QNAP Download StationAlso CWE-918
  • Steve doesn’t verify a server’s certificate and is susceptible to man-in-the-middle (MitM) attacksSame generic ecosystem
  • Rancher users who can create Projects can gain access to arbitrary projectsSame generic ecosystem
  • Fleet doesn’t validate a server’s certificate when connecting through SSHSame generic ecosystem
  • Authentication bypass in Stela by Diaple NetworkingSame generic ecosystem
  • CVE-2026-101290Same generic ecosystem

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-178, CWE-918
Source
CVE List V5
Source checked
Oct 15, 2026
References
2 linked sources
Open source record