HTTP Request Smuggling Affecting rouille package, versions >=0.3.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RUST-ROUILLE-18506914
- published2 Aug 2026
- disclosed28 Jul 2026
- creditUnknown
Introduced: 28 Jul 2026
NewCVE-2026-67182 (opens in a new tab)How to fix?
There is no fixed version for rouille.
Overview
Affected versions of this package are vulnerable to HTTP Request Smuggling via the handling of client-supplied HTTP headers that are copied verbatim to upstream connections. An attacker can bypass access controls by injecting bare line feed characters into header values, allowing the backend to interpret a crafted header as a separate HTTP request with attacker-controlled method, path, and headers.