---
id: CVE-2026-63506
title: Tina is a headless content management system
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
  Tin…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-639
vendor: tinacms
product: tinacms
affected:
  - tinacms < 1.1.4
  - auth < 1.1.4
  - next-tinacms-azure < 15.0.1
patched:
  - '@tinacms/auth 1.1.4'
  - next-tinacms-azure 15.0.1
published: '2026-09-16'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T16:17:35.987'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63506'
references:
  - url: >-
      https://github.com/tinacms/tinacms/commit/0a927a4f8d228dd05ee7ca4be32899bc190e73af
    label: security-advisories@github.com
  - url: 'https://github.com/tinacms/tinacms/pull/7168'
    label: security-advisories@github.com
  - url: 'https://github.com/tinacms/tinacms/releases/tag/@tinacms/auth@1.1.4'
    label: security-advisories@github.com
  - url: 'https://github.com/tinacms/tinacms/releases/tag/next-tinacms-azure@15.0.1'
    label: security-advisories@github.com
  - url: 'https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x'
    label: security-advisories@github.com
  - url: 'https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63506'
  - url: 'https://github.com/advisories/GHSA-g74q-6g2f-874x'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - npm
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-17T15:54:06.674922Z'
aliases:
  - GHSA-g74q-6g2f-874x
ecosystem: npm
ingestedAt: '2026-09-16T21:05:36.900Z'
epss: 0.00523
epssPercentile: 0.41884
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-63506)

Affected packages:

- `@tinacms/auth <= 1.1.3`
- `next-tinacms-azure <= 15.0.0`

Patched in:

- `@tinacms/auth 1.1.4`
- `next-tinacms-azure 15.0.1`

Source: https://github.com/advisories/GHSA-g74q-6g2f-874x