{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.13.14"
              },
              {
                "introduced": "3.14.0a1"
              },
              {
                "fixed": "3.14.5rc1"
              },
              {
                "introduced": "3.15.0a1"
              },
              {
                "fixed": "3.15.0b1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "b092705907c758d4f9742028652c9802f9f03dd3"
            },
            {
              "introduced": "f31a89bb901067dd105b00cfa90523cf7ffdbbdd"
            },
            {
              "fixed": "fd17997c3866d61e0e7bd8201b1d8f35b40a40bd"
            },
            {
              "fixed": "a68a9190498a16ab1a5c9012ef5a70df81a5b328"
            },
            {
              "fixed": "f31a89bb901067dd105b00cfa90523cf7ffdbbdd"
            },
            {
              "fixed": "05ed7ce7ae9e17c23a04085b2539fe6d6d3cef69"
            },
            {
              "fixed": "56b7100b04e44ea27989242b176beb8f016b2c53"
            },
            {
              "fixed": "58703ec1bdd1eb075e8b01a0c427683ce594dd3e"
            },
            {
              "fixed": "9e071c9b28c17f347f81b388a003d4eeb3c7a8dd"
            },
            {
              "fixed": "b1cf9016335cb637c5a425032e8274a224f4b2ed"
            },
            {
              "fixed": "c00c386faa579ad71196d33408644478488e43ec"
            }
          ],
          "repo": "https://github.com/python/cpython",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "PSF",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1502.json"
  },
  "details": "CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host.",
  "id": "CVE-2026-1502",
  "modified": "2026-07-15T01:49:21.067810875Z",
  "published": "2026-04-10T17:54:44.121Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/11/4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1502.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/2IVPAEQWUJBCTQZEJEVTYCIKSMQPGRZ3/"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1502"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/python/cpython/issues/146211"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/05ed7ce7ae9e17c23a04085b2539fe6d6d3cef69"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/56b7100b04e44ea27989242b176beb8f016b2c53"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/58703ec1bdd1eb075e8b01a0c427683ce594dd3e"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/9e071c9b28c17f347f81b388a003d4eeb3c7a8dd"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/b1cf9016335cb637c5a425032e8274a224f4b2ed"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/c00c386faa579ad71196d33408644478488e43ec"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/pull/146212"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/python/cpython"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "HTTP client proxy tunnel headers not validated for CR/LF"
}