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Critical

samlify SAML Signature Wrapping attack

Type: advisorySources: OSV

samlify is a Node.js library for SAML single sign-on. A Signature Wrapping attack has been found in samlify prior to version 2.10.0, allowing an attacker to forge a SAML Response to authenticate as any user. An attacker would need a signed XML document by the identity provider. Version 2.10.0 fixes the issue.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-47949
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 14:54 UTC · Revision 1

Source evidence

samlify SAML Signature Wrapping attack

core-osv · Original source

Published 19 May 2025, 19:28 UTC

samlify is a Node.js library for SAML single sign-on. A Signature Wrapping attack has been found in samlify prior to version 2.10.0, allowing an attacker to forge a SAML Response to authenticate as any user. An attacker would need a signed XML document by the identity provider. Version 2.10.0 fixes the issue.

osv:CVE-2025-47949
Complete source record
{
  "id": "d03bc9b77daf7980c84c0fd103a86319b4674239b7acf4fca47b757340cab3bf",
  "url": "https://osv.dev/vulnerability/CVE-2025-47949",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "samlify SAML Signature Wrapping attack",
    "summary": "samlify is a Node.js library for SAML single sign-on. A Signature Wrapping attack has been found in samlify prior to version 2.10.0, allowing an attacker to forge a SAML Response to authenticate as any user. An attacker would need a signed XML document by the identity provider. Version 2.10.0 fixes the issue.",
    "evidence": "osv:CVE-2025-47949",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2025-47949",
      "aliases": [
        "CVE-2025-47949",
        "GHSA-r683-v43c-6xqv"
      ],
      "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:H/SI:H/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tngan/samlify",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "73cae30f836fa71ac80904eeb52bfdee81fe06ae"
                },
                {
                  "fixed": "115679acd89f0a37ea3ebd8fff7db54fca3e8af3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:samlify_project:samlify:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.10.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "115679acd89f0a37ea3ebd8fff7db54fca3e8af3"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.9.1",
            "v2.8.11",
            "v2.8.10",
            "v2.8.9",
            "v2.8.8",
            "v2.8.7",
            "v2.8.6",
            "v2.8.5",
            "v2.8.4",
            "v2.8.3",
            "v2.8.2",
            "v2.8.1",
            "v2.8.0",
            "v2.8.0-rc1",
            "v2.7.7",
            "v2.7.6",
            "v2.7.5",
            "v2.7.4",
            "v2.7.3",
            "v2.7.2",
            "v2.7.1",
            "v2.7.0",
            "v2.6.3",
            "v2.6.2",
            "v2.6.1",
            "v2.6.0",
            "v2.5.1",
            "v2.5.0",
            "v2.5.0-rc4",
            "v2.5.0-rc3",
            "v2.5.0-rc2",
            "v2.5.0-rc1",
            "v2.4.2",
            "v2.4.1",
            "v.2.4.0",
            "v2.4.0-rc6",
            "v2.4.0-rc5",
            "v2.4.0-rc4",
            "v2.4.0-rc2",
            "v2.4.0-rc1",
            "v2.3.8",
            "v2.3.7",
            "v2.3.6",
            "v2.3.5",
            "v2.3.4",
            "v2.3.3",
            "v2.3.0",
            "v2.2.0",
            "v2.1.1",
            "v2.1.0",
            "v2.0.4",
            "v2.0.3",
            "v2.0.2",
            "v2.0.1",
            "v2.0.0",
            "v2.0.1-rc.3",
            "v2.0.0-rc.3",
            "v2.0.0-rc.2",
            "v2.0.0-rc.1",
            "v2.0.0-beta",
            "v2.0.0-alpha",
            "v1.2.5",
            "v1.2.4",
            "v1.2.3",
            "v1.2.2",
            "v1.2.1",
            "v1.2",
            "v1.1.5",
            "v1.1.3",
            "v1.1.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-47949.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.639149769Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47949.json",
        "https://github.com/tngan/samlify/security/advisories/GHSA-r683-v43c-6xqv",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-47949",
        "https://github.com/tngan/samlify/commit/115679acd89f0a37ea3ebd8fff7db54fca3e8af3"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-347"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47949.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-47949",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496564,
  "published_at": "2025-05-19T19:28:45.476+00:00"
}