Security advisory

{
  "id": "7291a801506c4c036246dc94d5ec948f97aa5fa5a9c0d3bd095baf53829dbfa4",
  "url": "https://osv.dev/vulnerability/CVE-2020-7731",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-7731",
    "summary": "This affects all versions <0.7.0 of package github.com/russellhaering/gosaml2. There is a crash on nil-pointer dereference caused by sending malformed XML signatures.",
    "evidence": "osv:CVE-2020-7731",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-7731",
      "aliases": [
        "CVE-2020-7711",
        "CVE-2020-7731",
        "GHSA-gq5r-cc4w-g8xf",
        "GHSA-mqqv-chpx-vq25",
        "GHSA-prjq-f4q3-fvfr",
        "GO-2020-0046",
        "SNYK-GOLANG-GITHUBCOMRUSSELLHAERINGGOSAML2-608302"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/russellhaering/gosaml2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "66e3b7affd622b8b24ea1e18845f045e46b23424"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "66e3b7affd622b8b24ea1e18845f045e46b23424"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.7.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.6.0",
            "v0.5.0",
            "v0.4.0",
            "v0.3.1",
            "v0.3.0",
            "v0.2.0",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-7731.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:24.803431465Z",
      "provider": "osv",
      "references": [
        "https://github.com/russellhaering/gosaml2/releases/tag/v0.7.0",
        "https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMRUSSELLHAERINGGOSAML2-608302",
        "https://github.com/russellhaering/gosaml2/issues/59"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-7711",
        "evidence": "/aliases"
      },
      {
        "value": "CVE-2020-7731",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385320,
  "published_at": "2021-04-30T16:15:07.547+00:00"
}