CVE-2026-19203highCWE-444

CVE-2026-19203: high-severity vulnerability in Eclipse Jetty

Published

Follow this CVE+ Monitor Eclipse Jetty+ Monitor jetty9

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.3epss 0.3%
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
Eclipse Foundation · Eclipse Jetty
Related CVEs — Eclipse Jetty

In the same product, most dangerous first.

CVE-2026-2332HIGHHTTP Request Smuggling via Chunked Extension Quoted-String ParsingEPSS 1.3%CVE-2026-1605HIGHCVE-2026-1605EPSS 0.7%CVE-2026-10050HIGHDigest authentication lossy encodingEPSS 0.6%CVE-2026-5795HIGHCVE-2026-5795EPSS 0.5%CVE-2026-19204HIGHCVE-2026-19204EPSS 0.5%CVE-2026-77711HIGHCVE-2026-77711EPSS 0.4%