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8.3 High

CVE-2026-19203 A client may issue specially crafted HTTP/1.1 chunked requests to a Jetty server that cause Jetty and an intermediary…

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 products and versions

Product Affected versions Fixed in
Eclipse Jetty 12.1 12.1.0 → 12.1.11 No fix stated
Eclipse Jetty 12.0 12.0.0 → 12.0.37 No fix stated
Eclipse Jetty 11.0 11.0.0 → 11.0.31 No fix stated
Eclipse Jetty 10.0 10.0.0 → 10.0.31 No fix stated
Eclipse Jetty 9.4 9.4.0 → 9.4.63 No fix stated

References

Timeline

  1. Published
  2. Last modified

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