Skip to content
CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-66746

Rouille 0.4.0 - 3.6.2 HTTP Response Splitting via Header Injection

Description

Rouille 0.4.0 through 3.6.2 contains an HTTP response splitting vulnerability that allows remote attackers to inject arbitrary response headers by embedding carriage return (0x0D) or line feed (0x0A) bytes into attacker-controlled input. Attackers can exploit percent-decoded query parameters reflected into response headers or inject bare LF characters into Cookie header values that are interpolated directly into Set-Cookie response headers, enabling cache poisoning, session fixation, and security header override attacks such as bypassing CSP or CORS policies.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

tomaka rouille

Default version status: affected

  • 0.4.0 to ≤ 3.6.2affected
pkg:github/tomaka/rouille

References