Rouille 0.3.3 through 3.6.2 contains an HTTP request smuggling vulnerability that allows remote attackers to bypass access controls by injecting bare line feed characters (0x0A) into client-supplied request header values that are copied verbatim to upstream connections without validation. Attackers can craft a header value containing a complete additional HTTP request that is interpreted as a separate request by backends such as Go net/http and Python http.server, causing the backend to process a smuggled request with attacker-chosen method, path, and headers that bypasses the rouille handler's access control logic.
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History
Tue, 28 Jul 2026 17:30:00 +0000
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Tue, 28 Jul 2026 17:00:00 +0000
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| Description | Rouille 0.3.3 through 3.6.2 contains an HTTP request smuggling vulnerability that allows remote attackers to bypass access controls by injecting bare line feed characters (0x0A) into client-supplied request header values that are copied verbatim to upstream connections without validation. Attackers can craft a header value containing a complete additional HTTP request that is interpreted as a separate request by backends such as Go net/http and Python http.server, causing the backend to process a smuggled request with attacker-chosen method, path, and headers that bypasses the rouille handler's access control logic. | |
| Title | Rouille 0.3.3 - 3.6.2 HTTP Request Smuggling via proxy Header Injection | |
| Weaknesses | CWE-444 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-07-28T17:10:35.695Z
Reserved: 2026-07-28T16:06:49.773Z
Link: CVE-2026-67182
Updated: 2026-07-28T17:10:20.655Z
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OpenCVE Enrichment
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