Node-SAML SAML Authentication Bypass

{
  "id": "79f883e1895c9bf27366777b6bf70e8de1d8d6b92831382781d29b5316e00384",
  "url": "https://osv.dev/vulnerability/CVE-2025-54369",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Node-SAML SAML Authentication Bypass",
    "summary": "Node-SAML is a SAML library not dependent on any frameworks that runs in Node. In versions 5.0.1 and below, Node-SAML loads the assertion from the (unsigned) original response document. This is different than the parts that are verified when checking signature. This allows an attacker to modify authentication details within a valid SAML assertion. For example, in one attack it is possible to remove any character from the SAML assertion username. This issue is fixed in version 5.1.0.",
    "evidence": "osv:CVE-2025-54369",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2025-54369",
      "aliases": [
        "CVE-2025-54369",
        "GHSA-m837-g268-mmv7"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/node-saml/node-saml",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1d8d66f16536687d577eea3335533928b57397be"
                },
                {
                  "fixed": "31ead9411ebc3e2385086fa9149b6c17732bca10"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "5.1.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "31ead9411ebc3e2385086fa9149b6c17732bca10"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "1d8d66f16536687d577eea3335533928b57397be"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v5.1.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v5.0.1",
            "v5.0.0",
            "v4.0.4",
            "v4.0.3",
            "v4.0.2",
            "v4.0.1",
            "v4.0.0",
            "v4.0.0-beta.6",
            "v4.0.0-beta.5",
            "v4.0.0-beta.4",
            "v4.0.0-beta.3",
            "v4.0.0-beta.2",
            "v3.0.0",
            "v2.0.5",
            "v2.0.4",
            "v2.0.3",
            "v2.0.2",
            "v2.0.1",
            "v2.0.0",
            "v1.5.0",
            "v1.4.2",
            "v1.4.1",
            "v1.4.0",
            "v1.3.5",
            "v1.3.2",
            "v1.3.1",
            "v1.3.0",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0",
            "v0.35.0",
            "v0.34.0",
            "v0.33.0",
            "v0.32.1",
            "v0.32.0",
            "v0.30.0",
            "v0.20.2",
            "v0.16.2",
            "v0.16.1",
            "v0.16.0",
            "v0.15.0",
            "v0.14.0",
            "v0.13.0",
            "v0.12.0",
            "v0.11.1",
            "v0.11.0",
            "v0.10.0",
            "v0.9.2",
            "v0.9.1",
            "v0.9.0",
            "v0.8.0",
            "v0.7.0",
            "v0.6.2",
            "v0.6.1",
            "v0.6.0",
            "v0.5.3",
            "v0.5.2",
            "v0.5.1",
            "v0.5.0",
            "v0.4.0",
            "v0.3.0",
            "v0.2.1",
            "v0.2.0",
            "v0.1.0",
            "0.0.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-54369.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:35.857379453Z",
      "provider": "osv",
      "references": [
        "https://github.com/node-saml/node-saml/releases/tag/v5.1.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54369.json",
        "https://github.com/node-saml/node-saml/security/advisories/GHSA-m837-g268-mmv7",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-54369",
        "https://github.com/node-saml/node-saml/commit/31ead9411ebc3e2385086fa9149b6c17732bca10"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-347",
          "CWE-87"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54369.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-54369",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 503318,
  "published_at": "2025-07-24T23:15:26.79+00:00"
}