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Public proof of conceptFix available

CVE-2026-2332

A public proof of concept exists; no exploitation attested.

  • Published2026-04-14
  • Fixed in12.1.7 · 12.0.33 · 11.0.29 · 11.0.28 · 10.0.28 · 9.4.60
  • WeaknessCWE-444

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-04-1412:16CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-2332?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-2332?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Eclipse jetty
BranchAffectedFixed in
12.1≥ 12.1.0, < 12.1.712.1.7
12.0≥ 12.0.0, < 12.0.3312.0.33
11.0≥ 11.0.0, < 11.0.2911.0.29
11.0≥ 11.0.0, < 11.0.2811.0.28
10.0≥ 10.0.0, < 10.0.2810.0.28
9.4≥ 9.4.0, < 9.4.609.4.60

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • jmcAlmaLinux:9all versions · fixed in 8.2.0-19.el9_8.2

Vendor advisories

  • RHSA-2026:60259 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.20 security update.

  • RHSA-2026:60256 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.22 security update.

  • RHSA-2026:60254 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.21 security update.

  • RHSA-2026:60252 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.19 security update.

  • RHSA-2026:60251 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.16 security update.

  • RHSA-2026:60250 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Release of Red Hat OpenShift Developer Tools - Openshift Jenkins 4.18 security update.

11 more advisories

Full record on NVD

Fix

  1. Update Eclipse jetty to 12.1.7 · 12.0.33 · 11.0.29 · 11.0.28 · 10.0.28 · 9.4.60
  2. Vendor fix Red Hat Product Security RHSA-2026:60259 · 4 productsIt is recommended that existing users of Red Hat OpenShift Developer Tools - OpenShift Jenkins 4.20 upgrade to the latest. This image uses java-21-openjdk as the default JDK. java-25-openjdk is available in rhel9 images. java-17-openjdk is removed.
  3. Vendor fix Red Hat Product Security RHSA-2026:60256 · 4 productsIt is recommended that existing users of Red Hat OpenShift Developer Tools - OpenShift Jenkins 4.22 upgrade to the latest. This image uses java-21-openjdk as the default JDK. java-25-openjdk is available in rhel9 images. java-17-openjdk is removed.
  4. Vendor fix Red Hat Product Security RHSA-2026:60254 · 4 productsIt is recommended that existing users of Red Hat OpenShift Developer Tools - OpenShift Jenkins 4.21 upgrade to the latest. This image uses java-21-openjdk as the default JDK. java-25-openjdk is available in rhel9 images. java-17-openjdk is removed.
  5. Vendor fix Red Hat Product Security RHSA-2026:60252 · 4 productsIt is recommended that existing users of Red Hat OpenShift Developer Tools - OpenShift Jenkins 4.19 upgrade to the latest. This image uses java-21-openjdk as the default JDK. java-25-openjdk is available in rhel9 images. java-17-openjdk is removed.
  6. Vendor fix Red Hat Product Security RHSA-2026:60251 · 4 productsIt is recommended that existing users of Red Hat OpenShift Developer Tools - OpenShift Jenkins 4.16 upgrade to the latest. This image uses java-21-openjdk as the default JDK. java-25-openjdk is available in rhel9 images. java-17-openjdk is removed.
  7. Vendor fix Red Hat Product Security RHSA-2026:60250 · 4 productsIt is recommended that existing users of Red Hat OpenShift Developer Tools - OpenShift Jenkins 4.18 upgrade to the latest. This image uses java-21-openjdk as the default JDK. java-25-openjdk is available in rhel9 images. java-17-openjdk is removed.

Advisories and patches

Detection

read 2026-10-23 19:25 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiedxiaoqiMikko/jetty-line-check
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionpoc2026-04-14
  • OpenCVESSVC decisionpoc—
  • CNACVSS 3.17.4read 2026-10-23
  • NVDCVSS 3.19.1read 2026-10-23
  • CNAweakness (CWE)CWE-444read 2026-10-23
  • FIRST EPSSEPSS score1.3 %2026-10-23
  • PoC-in-GitHubproof of concept1read 2026-10-23
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
2026-04-14
Last Modified
2026-09-10
NVD status
Modified

Frequently asked questions

What is CVE-2026-2332?

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.

Is CVE-2026-2332 actively exploited?

A proof-of-concept exploit exists for CVE-2026-2332, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-2332?

CVE-2026-2332 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

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