Vulnerability-Lookup

CVE-2026-63506 (GCVE-0-2026-63506)

Vulnerability from cvelistv5 – Published: 2026-09-16 20:27 – Updated: 2026-09-16 20:27

Title

Tina: [Broken Access Control] letting any TinaCloud user authorize against any self-hosted site

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.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

GitHub_M mitre root

References

5 references

URL	Tags
https://github.com/tinacms/tinacms/security/advis…	x_refsource_CONFIRM
https://github.com/tinacms/tinacms/pull/7168	x_refsource_MISC
https://github.com/tinacms/tinacms/commit/0a927a4…	x_refsource_MISC
https://github.com/tinacms/tinacms/releases/tag/@…	x_refsource_MISC
https://github.com/tinacms/tinacms/releases/tag/n…	x_refsource_MISC

Impacted products

3 products

Vendor	Product	Version	CPE status
tinacms	tinacms	Affected: < 1.1.4	guessed
@tinacms	auth	Affected: < 1.1.4	guessed
tinacms	next-tinacms-azure	Affected: < 15.0.1	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T20:27:37.385Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x"
        },
        {
          "name": "https://github.com/tinacms/tinacms/pull/7168",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tinacms/tinacms/pull/7168"
        },
        {
          "name": "https://github.com/tinacms/tinacms/commit/0a927a4f8d228dd05ee7ca4be32899bc190e73af",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tinacms/tinacms/commit/0a927a4f8d228dd05ee7ca4be32899bc190e73af"
        },
        {
          "name": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/auth@1.1.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/auth@1.1.4"
        },
        {
          "name": "https://github.com/tinacms/tinacms/releases/tag/next-tinacms-azure@15.0.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/tinacms/tinacms/releases/tag/next-tinacms-azure@15.0.1"
        }
      ],
      "source": {
        "advisory": "GHSA-g74q-6g2f-874x",
        "discovery": "UNKNOWN"
      },
      "title": "Tina: [Broken Access Control] letting any TinaCloud user authorize against any self-hosted site"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-63506",
    "datePublished": "2026-09-16T20:27:37.385Z",
    "dateReserved": "2026-07-16T21:49:52.069Z",
    "dateUpdated": "2026-09-16T20:27:37.385Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-63506\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-09-16T21:17:13.163\",\"lastModified\":\"2026-09-16T21:17:13.163\",\"vulnStatus\":\"Received\",\"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.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"tinacms\",\"product\":\"tinacms\",\"versions\":[{\"version\":\"\u003c 1.1.4\",\"status\":\"affected\"}]},{\"vendor\":\"@tinacms\",\"product\":\"auth\",\"versions\":[{\"version\":\"\u003c 1.1.4\",\"status\":\"affected\"}]},{\"vendor\":\"tinacms\",\"product\":\"next-tinacms-azure\",\"versions\":[{\"version\":\"\u003c 15.0.1\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-639\"}]}],\"references\":[{\"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\":\"security-advisories@github.com\"}]}}"
  }
}

FKIE_CVE-2026-63506

Vulnerability from fkie_nvd - Published: 2026-09-16 21:17 - Updated: 2026-09-16 21:17

Severity

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/tinacms/tinacms/commit/0a927a4f8d228dd05ee7ca4be32899bc190e73af
	security-advisories@github.com	https://github.com/tinacms/tinacms/pull/7168
	security-advisories@github.com	https://github.com/tinacms/tinacms/releases/tag/@tinacms/auth@1.1.4
	security-advisories@github.com	https://github.com/tinacms/tinacms/releases/tag/next-tinacms-azure@15.0.1
	security-advisories@github.com	https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x

Impacted products

	Vendor	Product	Version

JSON

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": "2026-09-16T21:17:13.163",
  "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"
      }
    ]
  },
  "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"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.