CVE-2026-2332: CWE-444 Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') in Eclipse Foundation Eclipse Jetty
In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques outlined here: * https://w4ke.info/2025/06/18/funky-chunks.html * https://w4ke.info/2025/10/29/funky-chunks-2.html Jetty terminates chunk extension parsing at \r\n inside quoted strings instead of treating this as an error. POST / HTTP/1.1 Host: localhost Transfer-Encoding: chunked 1;ext="val X 0 GET /smuggled HTTP/1.1 ... Note how the chunk extension does not close the double quotes, and it is able to inject a smuggled request.
AI Analysis
Technical Summary
Eclipse Jetty versions 9.4.0 through 12.1.0 contain a vulnerability in the HTTP/1.1 chunked transfer encoding parser. Specifically, when chunk extensions include unterminated quoted strings, Jetty terminates parsing at the CRLF inside the quotes rather than flagging an error. This behavior allows an attacker to craft 'funky chunks' that smuggle additional HTTP requests within a single request stream, exploiting inconsistent interpretation of HTTP requests (CWE-444). The vulnerability has a CVSS 3.1 score of 7.4, indicating high severity with network attack vector, high complexity, no privileges required, no user interaction, and high impact on confidentiality and integrity.
Potential Impact
Successful exploitation of this vulnerability can lead to HTTP request smuggling, which may allow attackers to bypass security controls, poison web caches, perform cross-site scripting, or gain unauthorized access to internal resources. The CVSS score reflects high confidentiality and integrity impact but no availability impact. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation has been published, users should monitor Eclipse Foundation advisories for updates. Until a fix is available, consider deploying Web Application Firewalls (WAFs) or reverse proxies that can detect and block malformed chunked requests as a potential interim mitigation.
CVE-2026-2332: CWE-444 Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') in Eclipse Foundation Eclipse Jetty
Description
In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, similar to the "funky chunks" techniques outlined here: * https://w4ke.info/2025/06/18/funky-chunks.html * https://w4ke.info/2025/10/29/funky-chunks-2.html Jetty terminates chunk extension parsing at \r\n inside quoted strings instead of treating this as an error. POST / HTTP/1.1 Host: localhost Transfer-Encoding: chunked 1;ext="val X 0 GET /smuggled HTTP/1.1 ... Note how the chunk extension does not close the double quotes, and it is able to inject a smuggled request.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Eclipse Jetty versions 9.4.0 through 12.1.0 contain a vulnerability in the HTTP/1.1 chunked transfer encoding parser. Specifically, when chunk extensions include unterminated quoted strings, Jetty terminates parsing at the CRLF inside the quotes rather than flagging an error. This behavior allows an attacker to craft 'funky chunks' that smuggle additional HTTP requests within a single request stream, exploiting inconsistent interpretation of HTTP requests (CWE-444). The vulnerability has a CVSS 3.1 score of 7.4, indicating high severity with network attack vector, high complexity, no privileges required, no user interaction, and high impact on confidentiality and integrity.
Potential Impact
Successful exploitation of this vulnerability can lead to HTTP request smuggling, which may allow attackers to bypass security controls, poison web caches, perform cross-site scripting, or gain unauthorized access to internal resources. The CVSS score reflects high confidentiality and integrity impact but no availability impact. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation has been published, users should monitor Eclipse Foundation advisories for updates. Until a fix is available, consider deploying Web Application Firewalls (WAFs) or reverse proxies that can detect and block malformed chunked requests as a potential interim mitigation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- eclipse
- Date Reserved
- 2026-02-11T09:56:25.879Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69de25ad82d89c981f28fd41
Added to database: 4/14/2026, 11:31:57 AM
Last enriched: 4/14/2026, 11:46:48 AM
Last updated: 4/14/2026, 1:48:51 PM
Views: 7
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