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CVE-2026-19203

HIGH
8.3
CVSS Score
Published: September 8, 2026 at 12:08 PM UTC
Updated: September 8, 2026 at 03:18 PM UTC
1 product affected across 1 vendorJetty

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Severity
HIGH8.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

A client may issue specially crafted HTTP/1.1 chunked requests to a Jetty server that cause Jetty and an intermediary proxy to interpret different request boundaries, potentially resulting in HTTP request smuggling. This is caused by Jetty accepting a lone LF character as a terminator in parts of chunked request parsing. Depending on the Jetty version and configured HTTP compliance mode, this may occur in chunk extensions, chunk data termination, or trailer termination.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Jetty· Eclipsemaven
60%
10.0.0 ≤ v ≤ 10.0.3111.0.0 ≤ v ≤ 11.0.3112.0.0 ≤ v ≤ 12.0.3712.1.0 ≤ v ≤ 12.1.119.4.0 ≤ v ≤ 9.4.6310.0.011.0.012.0.012.1.09.4.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://github.com/jetty/jetty.project/security/advisories/GHSA-xc35-c22g-239h

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.3HIGHeclipse
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-444

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