rust-actix-http — security advisory

{
  "id": "fa54d25d45ef596ff054a4c732d234d5122942e979512d837760aa2b7feb176f",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-73051",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-73051",
    "summary": "actix-http versions before 3.12.1 contain an HTTP request smuggling vulnerability in the HTTP/1.1 parser that accepts requests with both Content-Length and Transfer-Encoding: chunked headers. Unauthenticated remote attackers can exploit this through a front-end intermediary to desynchronize backend requests and smuggle malicious HTTP requests to the Actix service.",
    "evidence": "osv:UBUNTU-CVE-2026-73051",
    "products": [
      {
        "name": {
          "value": "rust-actix-http",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.11.2-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.12.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "3.13.1-2",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rust-actix-http",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.9.0-3",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "3.11.2-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "3.11.2-2",
            "evidence": "/affected/1/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "UBUNTU-CVE-2026-73051",
      "aliases": [
        "UBUNTU-CVE-2026-73051"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "rust-actix-http",
            "purl": "pkg:deb/ubuntu/rust-actix-http?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "3.11.2-2",
            "3.12.0-1",
            "3.13.1-2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73051.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "librust-actix-http-dev",
                "binary_version": "3.13.1-2"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "rust-actix-http",
            "purl": "pkg:deb/ubuntu/rust-actix-http?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "3.9.0-3",
            "3.11.2-1",
            "3.11.2-2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73051.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "librust-actix-http-dev",
                "binary_version": "3.11.2-2"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T13:00:57.050362451Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-73051"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-73051",
        "https://www.cve.org/CVERecord?id=CVE-2026-73051",
        "https://github.com/actix/actix-web/security/advisories/GHSA-xhj4-vrgc-hr34",
        "https://www.vulncheck.com/advisories/actix-http-before-http-request-smuggling-via-cl-te"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-73051",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 360863,
  "published_at": "2026-08-14T12:16:00+00:00"
}