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VulnerabilityPublished Updated

CVE-2026-2332: Eclipse Jetty · HTTP Request/Response smuggling

Affects Eclipse JettySource CVE Database V5

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Not known to be exploited · CVSS 7.4 High.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
7.4High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.3% chance of exploitation in 30 days – higher than 70% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Eclipse FoundationEclipse JettyAffected
  • >=12.1.0 <=12.1.6
  • >=12.0.0 <=12.0.32
  • >=11.0.0 <=11.0.28
  • >=10.0.0 <=10.0.27
  • >=9.4.0 <=9.4.59
Fixed in–
MavenEclipse Foundation/pkg://maven/org.eclipse.jetty/jetty-httppkg:maven/Eclipse Foundation/pkg://maven/org.eclipse.jetty/jetty-httpOther threatsAffected
  • >=12.1.0 <=12.1.6
  • >=12.0.0 <=12.0.32
  • >=11.0.0 <=11.0.28
  • >=10.0.0 <=10.0.27
  • >=9.4.0 <=9.4.59
Fixed in–
Mavenorg.eclipse.jetty/jetty-serverpkg:maven/org.eclipse.jetty/jetty-serverOther threatsAffected
  • 9.4.0 – 12.1.0
5 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat and Eclipse recommend updating to patched versions of Eclipse Jetty as soon as possible. No practical mitigation or workaround has been identified. Users should apply vendor-provided updates promptly once available. Since this is not a cloud service, remediation depends on patching affected Jetty deployments.

Description

In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques outlined here: * https://w4ke.info/2025/06/18/funky-chunks.html * https://w4ke.info/2025/10/29/funky-chunks-2.html Jetty terminates chunk extension parsing at \r\n inside quoted strings instead of treating this as an error. POST / HTTP/1.1 Host: localhost Transfer-Encoding: chunked 1;ext="val X 0 GET /smuggled HTTP/1.1 ... Note how the chunk extension does not close the double quotes, and it is able to inject a smuggled request.

References

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