PT-2026-65542 · Tomaka · Rouille

Theodosis Paidakis · CVE-2026-67182 · Published 2026-07-28 · Updated 2026-07-28

NVD

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L

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.

Exploit

Fix

HTTP Request/Response Smuggling

Weakness Enumeration

CWE-444

Related Identifiers

CVE-2026-67182

Affected Products

Rouille

References · 3

• 🔥 https://github.com/theopaid/HTTP-Request-Smuggling-Enables-Front-End-Access-Control-Bypass-rouille- · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-67182 · Security Note
• https://vulncheck.com/advisories/rouille-http-request-smuggling-via-proxy-header-injection · Note