{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "3.11.18"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "introduced": "3.12.0"
                  },
                  {
                    "fixed": "3.12.16"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "introduced": "3.13.0"
                  },
                  {
                    "fixed": "3.13.18"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "introduced": "3.14.0"
                  },
                  {
                    "fixed": "3.14.10"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "introduced": "3.15.0"
                  },
                  {
                    "fixed": "3.15.2"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "introduced": "3.16.0a1"
                  },
                  {
                    "fixed": "3.16.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "fixed": "21a50891ab4be2e9955239e625ae2b40c6b1854d"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "36cd295f32fc9ba19399e01abee91231440a41dd"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "48d9b2712cd52206c7a5882d0fdca4863ed65e93"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "7dd8b4736a1419750b94a388e6d158be15836fe6"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "98f0e4ed349f370dc8a00366da1a9797e11c9ed5"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "a17d9ef549008133eadf20689b1f4787902efe5b"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "af52b41afa4330fb38583db553631baa2f122f90"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "c7fd7edf7e0d122a3973cf676fae21b6aaa650a8"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "e2a9dd97ef9571c710ac0afaa834c8879aebce78"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "e4500d8a437ee5b988a5410cb9b59d177aa01370"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "e4f63e65a93cf44c14274aa987e644b8c003625e"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "e9bf2cf84eebf838a1edaa1c648c2b36345b99d3"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "26badd80b6dc7786cd8fb63c3608a31f04754219"
            },
            {
              "introduced": "0fb18b02c8ad56299d6a2910be0bab8ad601ef24"
            },
            {
              "fixed": "2c2462afc5d978d31f3d073001fc202d269917ff"
            },
            {
              "introduced": "60403a5409ff2c3f3b07dd2ca91a7a3e096839c7"
            },
            {
              "fixed": "0d4bd512fc429e3d4eacdd113c975e161f21644d"
            },
            {
              "introduced": "ebf955df7a89ed0c7968f79faec1de49f61ed7cb"
            },
            {
              "fixed": "b703b2c5e704341d61e367b9b940b77ed11dded0"
            },
            {
              "introduced": "d220409a13b77de7a6c30abe16ea90db01528edc"
            },
            {
              "fixed": "5e58eaad7c58df58dfa8ea549c87996e01dd1077"
            },
            {
              "introduced": "22d79d9840a275ed6ed36cd590dc74edc61765fb"
            },
            {
              "fixed": "22d79d9840a275ed6ed36cd590dc74edc61765fb"
            },
            {
              "fixed": "21a50891ab4be2e9955239e625ae2b40c6b1854d"
            },
            {
              "fixed": "36cd295f32fc9ba19399e01abee91231440a41dd"
            },
            {
              "fixed": "48d9b2712cd52206c7a5882d0fdca4863ed65e93"
            },
            {
              "fixed": "7dd8b4736a1419750b94a388e6d158be15836fe6"
            },
            {
              "fixed": "98f0e4ed349f370dc8a00366da1a9797e11c9ed5"
            },
            {
              "fixed": "a17d9ef549008133eadf20689b1f4787902efe5b"
            },
            {
              "fixed": "af52b41afa4330fb38583db553631baa2f122f90"
            },
            {
              "fixed": "c7fd7edf7e0d122a3973cf676fae21b6aaa650a8"
            },
            {
              "fixed": "e2a9dd97ef9571c710ac0afaa834c8879aebce78"
            },
            {
              "fixed": "e4500d8a437ee5b988a5410cb9b59d177aa01370"
            },
            {
              "fixed": "e4f63e65a93cf44c14274aa987e644b8c003625e"
            },
            {
              "fixed": "e9bf2cf84eebf838a1edaa1c648c2b36345b99d3"
            }
          ],
          "repo": "https://github.com/python/cpython",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "PSF",
    "cwe_ids": [
      "CWE-299"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115557.json"
  },
  "details": "Python has added a denylist for known compromised certificates to the \"ssl\" module to ensure user safety even without certificate revocation configured. Known compromised certificates will automatically be rejected regardless of the SSLContext policy configuration.",
  "id": "CVE-2026-115557",
  "modified": "2026-11-11T10:30:27.441070026Z",
  "published": "2026-10-24T14:15:14.283Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/10/20/29"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/10/24/5"
    },
    {
      "type": "ADVISORY",
      "url": "https://emudhra.we-have-a-problem.com/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115557.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/FNAJMZV6XQYLVPABNINDMF3VF66AYLW4/"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115557"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/python/cpython/issues/160040"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/21a50891ab4be2e9955239e625ae2b40c6b1854d"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/36cd295f32fc9ba19399e01abee91231440a41dd"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/48d9b2712cd52206c7a5882d0fdca4863ed65e93"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/7dd8b4736a1419750b94a388e6d158be15836fe6"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/98f0e4ed349f370dc8a00366da1a9797e11c9ed5"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/a17d9ef549008133eadf20689b1f4787902efe5b"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/af52b41afa4330fb38583db553631baa2f122f90"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/c7fd7edf7e0d122a3973cf676fae21b6aaa650a8"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/e2a9dd97ef9571c710ac0afaa834c8879aebce78"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/e4500d8a437ee5b988a5410cb9b59d177aa01370"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/e4f63e65a93cf44c14274aa987e644b8c003625e"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/e9bf2cf84eebf838a1edaa1c648c2b36345b99d3"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/pull/160042"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/python/cpython"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Distrust compromised intermediate certificates in ssl module"
}