{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.0.0"
              },
              {
                "fixed": "1.2.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2e456897af3158c175bb490ce7fc51d6241c8922"
            },
            {
              "fixed": "8910200"
            }
          ],
          "repo": "https://github.com/sztheory/relyra",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-jv46-xfwm-36j7"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-287",
      "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49454.json"
  },
  "details": "Relyra is a strict-by-default SAML 2.0 Service Provider library for Elixir and Phoenix. Versions 1.0.0 and 1.1.0 accept forged SAML signatures because SignatureValue was not cryptographically verified before the library returned a successful authentication result. The XMLDSig trust boundary was incomplete as :public_key.verify over the exclusive-C14N canonicalized SignedInfo was not performed against the configured IdP certificate's public key, DigestValue was not recomputed over the canonicalized referenced element, and canonicalize/2 remained an unused passthrough in the signature-verification path. The result was a structure-only acceptance path where document shape and trust-source rejection could succeed without proving the signature bytes. A forged SignatureValue carrying an attacker-controlled NameID could be accepted as {:ok}. This issue has been fixed in version 1.2.0.",
  "id": "CVE-2026-49454",
  "modified": "2026-07-08T05:36:40.658698741Z",
  "published": "2026-06-18T20:52:22.605Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49454.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/szTheory/relyra/security/advisories/GHSA-jv46-xfwm-36j7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49454"
    },
    {
      "type": "FIX",
      "url": "https://github.com/szTheory/relyra/commit/2e456897af3158c175bb490ce7fc51d6241c8922"
    },
    {
      "type": "FIX",
      "url": "https://github.com/szTheory/relyra/commit/8910200"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Relyra SAML SignatureValue not cryptographically verified -\u003e authentication bypass"
}