CVE-2026-2332Public exploitNetwork attack vector

Request smuggling via quoted chunk-extension parsing

Published Apr 14, 2026 · Updated Apr 14, 2026

HTTP request smuggling in Eclipse Jetty allows remote attackers to inject requests via malformed HTTP/1.1 chunk extensions. The HTTP/1.1 parser treats CRLF inside an unclosed quoted chunk-extension value as the chunk-header terminator instead of rejecting it. An unauthenticated network attacker can exploit the parsing differential when Jetty is behind a frontend that interprets the malformed request differently, enabling cache poisoning, access-control bypass, or exposure of other users' responses.

CVSS severity7.4
High
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTTP request smuggling in Eclipse Jetty allows remote attackers to inject requests via malformed HTTP/1.1 chunk extensions. The HTTP/1.1 parser treats CRLF inside an unclosed quoted chunk-extension value as the chunk-header terminator instead of rejecting it. An unauthenticated network attacker can exploit the parsing differential when Jetty is behind a frontend that interprets the malformed request differently, enabling cache poisoning, access-control bypass, or exposure of other users' responses.

The record

CVE
CVE-2026-2332
Published
Apr 14, 2026
Updated
Apr 14, 2026
Vendor
The Eclipse Foundation
Product
Eclipse Jetty
Classifications
CWE-444, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.0 <=10.0.27
  2. Affected versionversion=11.0.0 <=11.0.27
  3. Affected versionversion=12.0.0 <=12.0.32
  4. Affected versionversion=12.1.0 <=12.1.6
  5. Affected versionversion=9.4.0 <=9.4.59

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse Jettyversion=10.0.0 <=10.0.27; version=11.0.0 <=11.0.27; version=12.0.0 <=12.0.32; version=12.1.0 <=12.1.6; version=9.4.0 <=9.4.59

Published CVSS scores

7.4Red HatCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
7.4Eclipse FoundationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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