{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-39976",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-09T17:38:00.854614Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-09T19:31:53.801Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "passport",
          "vendor": "laravel",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 13.0.0, \u003c 13.7.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Laravel Passport provides OAuth2 server support to Laravel. From 13.0.0 to before 13.7.1, there is an Authentication Bypass for client_credentials tokens. the league/oauth2-server library sets the JWT sub claim to the client identifier (since there\u0027s no user). The token guard then passes this value to retrieveById() without validating it\u0027s actually a user identifier, potentially resolving an unrelated real user. Any machine-to-machine token can inadvertently authenticate as an actual user. This vulnerability is fixed in 13.7.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287: Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-09T16:50:42.326Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/laravel/passport/security/advisories/GHSA-349c-2h2f-mxf6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/laravel/passport/security/advisories/GHSA-349c-2h2f-mxf6"
        },
        {
          "name": "https://github.com/laravel/passport/issues/1900",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/laravel/passport/issues/1900"
        },
        {
          "name": "https://github.com/thephpleague/oauth2-server/issues/1456#issuecomment-2734989996",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/thephpleague/oauth2-server/issues/1456#issuecomment-2734989996"
        },
        {
          "name": "https://github.com/laravel/passport/pull/1901",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/laravel/passport/pull/1901"
        },
        {
          "name": "https://github.com/laravel/passport/pull/1902",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/laravel/passport/pull/1902"
        }
      ],
      "source": {
        "advisory": "GHSA-349c-2h2f-mxf6",
        "discovery": "UNKNOWN"
      },
      "title": "Laravel Passport\u0027s TokenGuard Authenticates Unrelated User for Client Credentials Tokens"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-39976",
    "datePublished": "2026-04-09T16:50:42.326Z",
    "dateReserved": "2026-04-08T00:01:47.628Z",
    "dateUpdated": "2026-04-09T19:31:53.801Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}