CVE-2024-6763 — Jetty URI parsing of invalid authority

Affected: Eclipse Foundation Jetty, eclipse jetty

Eclipse Jetty is a lightweight, highly scalable, Java-based web server and Servlet engine . It includes a utility class, HttpURI, for URI/URL parsing.

The HttpURI class does insufficient validation on the authority segment of a URI. However the behaviour of HttpURI differs from the common browsers in how it handles a URI that would be considered invalid if fully validated against the RRC. Specifically HttpURI and the browser may differ on the value of the host extracted from an invalid URI and thus a combination of Jetty and a vulnerable browser may be vulnerable to a open redirect attack or to a SSRF attack if the URI is used after passing validation checks.

GHSA-355h-qmc2-wpwf — Jetty has HTTP Request Smuggling via Chunked Extension Quoted-String Parsing

Affected: Maven: org.eclipse.jetty:jetty-http

### Description (as reported)

Jetty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks.

### Background

This vulnerability is a new variant discovered while researching the "Funky Chunks" HTTP request smuggling techniques: - https://w4ke.info/2025/06/18/funky-chunks.html - https://w4ke.info/2025/10/29/funky-chunks-2.html

The original research tested various chunk extension parsing differentials but did not test quoted-string handling within extension values.

### Technical Details

**RFC 9112 Section 7.1.1** defines chunked transfer encoding: ``` chunk = chunk-size [ chunk-ext ] CRLF chunk-data CRLF chunk-ext = *( BWS ";" BWS chunk-ext-name [ BWS "=" BWS chunk-ext-val ] ) chunk-ext-val = token / quoted-string ```

**RFC 9110 Section 5.6.4** defines quoted-string: ``` quoted-string = DQUOTE *( qdtext / quoted-pair ) DQUOTE ```

A quoted-string continues until the closing DQUOTE, and `\r\n` sequences are not permitted within the quotes.

### Vulnerability

Jetty terminates chunk header parsing at `\r\n` inside quoted strings instead of treating this as an error.

**Expected (RFC compliant):** ``` Chunk: 1;a="value\r\nhere"\r\n ^^^^^^^^^^^^^^^^^^ extension value Body: [1 byte after the real \r\n] ```

**Actual (jetty):** ``` Chunk: 1;a="value ^^^^^ terminates here (WRONG) Body: here"... treated as body/next request ```

### Proof of Concept

```python #!/usr/bin/env python3 import…

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CVE-2024-6763 — Jetty URI parsing of invalid authority

GHSA-355h-qmc2-wpwf — Jetty has HTTP Request Smuggling via Chunked Extension Quoted-String Parsing