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FKIE_CVE-2026-63506

Vulnerability from fkie_nvd - Published: 2026-09-16 21:17 - Updated: 2026-09-17 16:17
Severity
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Tina is a headless content management system. Prior to @tinacms/auth 1.1.4 and next-tinacms-azure 15.0.1, isAuthorized accepts a request-controlled clientID and asks isUserAuthorized to validate the bearer token against that selected TinaCloud app instead of the self-hosted site's configured app. An attacker with any TinaCloud account can submit the attacker's own app ID and valid token to a victim endpoint, causing TinaCloudBackendAuthProvider or an affected media authorized callback to accept the attacker's verified status across the tenant boundary. The vulnerable logic is present in packages/@tinacms/auth/src/index.ts and packages/next-tinacms-azure/src/auth.ts. Successful exploitation permits media listing, reading, upload, or deletion and, when TinaCloudBackendAuthProvider is used, GraphQL read, create, update, and delete operations on the victim's content without a victim account or victim interaction. This vulnerability is fixed in @tinacms/auth 1.1.4 and next-tinacms-azure 15.0.1.
References
security-advisories@github.comhttps://github.com/tinacms/tinacms/commit/0a927a4f8d228dd05ee7ca4be32899bc190e73af
security-advisories@github.comhttps://github.com/tinacms/tinacms/pull/7168
security-advisories@github.comhttps://github.com/tinacms/tinacms/releases/tag/@tinacms/auth@1.1.4
security-advisories@github.comhttps://github.com/tinacms/tinacms/releases/tag/next-tinacms-azure@15.0.1
security-advisories@github.comhttps://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "tinacms",
          "vendor": "tinacms",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.1.4"
            }
          ]
        },
        {
          "product": "auth",
          "vendor": "@tinacms",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.1.4"
            }
          ]
        },
        {
          "product": "next-tinacms-azure",
          "vendor": "tinacms",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 15.0.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Tina is a headless content management system. Prior to @tinacms/auth 1.1.4 and next-tinacms-azure 15.0.1, isAuthorized accepts a request-controlled clientID and asks isUserAuthorized to validate the bearer token against that selected TinaCloud app instead of the self-hosted site\u0027s configured app. An attacker with any TinaCloud account can submit the attacker\u0027s own app ID and valid token to a victim endpoint, causing TinaCloudBackendAuthProvider or an affected media authorized callback to accept the attacker\u0027s verified status across the tenant boundary. The vulnerable logic is present in packages/@tinacms/auth/src/index.ts and packages/next-tinacms-azure/src/auth.ts. Successful exploitation permits media listing, reading, upload, or deletion and, when TinaCloudBackendAuthProvider is used, GraphQL read, create, update, and delete operations on the victim\u0027s content without a victim account or victim interaction. This vulnerability is fixed in @tinacms/auth 1.1.4 and next-tinacms-azure 15.0.1."
    }
  ],
  "id": "CVE-2026-63506",
  "lastModified": "2026-09-17T16:17:35.987",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63506",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-17T15:54:06.674922Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-16T21:17:13.163",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tinacms/tinacms/commit/0a927a4f8d228dd05ee7ca4be32899bc190e73af"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tinacms/tinacms/pull/7168"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/auth@1.1.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tinacms/tinacms/releases/tag/next-tinacms-azure@15.0.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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