Security advisory

{
  "id": "95feca987c2436a6b3f3e0f83a2ccd956e9aa351ecd0b77dc5ab60e46a86a9a0",
  "url": "https://osv.dev/vulnerability/CVE-2016-10127",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-10127",
    "summary": "PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.",
    "evidence": "osv:CVE-2016-10127",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2016-10127",
      "aliases": [
        "CVE-2016-10127",
        "GHSA-m269-wj6g-c459",
        "PYSEC-2017-67"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/identitypython/pysaml2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6e09a25d9b4b7aa7a506853210a9a14100b8bc9b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "6e09a25d9b4b7aa7a506853210a9a14100b8bc9b"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.3.0",
            "v4.4.0",
            "v4.2.0",
            "v4.1.0",
            "4.0.0",
            "v3.0.2",
            "3.0.0",
            "2.4.0",
            "2.3.0",
            "v2.2.0",
            "2.1.0",
            "2.0.0",
            "v1.0.3",
            "0.4.2",
            "1.0.1",
            "1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-10127.json"
          }
        }
      ],
      "modified": "2026-10-20T10:46:05.533097167Z",
      "provider": "osv",
      "references": [
        "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=850716",
        "https://github.com/rohe/pysaml2/commit/6e09a25d9b4b7aa7a506853210a9a14100b8bc9b",
        "https://github.com/rohe/pysaml2/issues/366",
        "https://github.com/rohe/pysaml2/pull/379"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2016-10127",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 379318,
  "published_at": "2017-03-03T15:59:00.21+00:00"
}