{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.3.3"
              },
              {
                "last_affected": "3.6.2"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "536fa0eacaeef93168f3378a0296e3f99da7b3af"
            }
          ],
          "repo": "https://github.com/tomaka/rouille",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-444"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67182.json"
  },
  "details": "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.",
  "id": "CVE-2026-67182",
  "modified": "2026-08-12T03:51:36.632352335Z",
  "published": "2026-07-28T16:18:08.550Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67182.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67182"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/rouille-http-request-smuggling-via-proxy-header-injection"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tomaka/rouille"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/theopaid/HTTP-Request-Smuggling-Enables-Front-End-Access-Control-Bypass-rouille-"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Rouille 0.3.3 - 3.6.2 HTTP Request Smuggling via proxy Header Injection"
}