---
id: CVE-2026-108260
title: Tina is a headless content management system
summary: >-
  Tina is a headless content management system. Prior to 0.2.1, the
  tina-markdown element in packages/@tinacms/web-components/src/tina-markdown.js
  assigns a rich-text node.url value directly to an anchor href without
  validating the URL sch…
severity: high
cvss: 7.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N'
cwe:
  - CWE-79
  - CWE-83
vendor: tinacms
product: '@tinacms/web-components'
affected:
  - '@tinacms/web-components <= 0.2.0'
patched:
  - '@tinacms/web-components 0.2.1'
published: '2026-10-09'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T21:17:04.180'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108260'
references:
  - url: >-
      https://github.com/tinacms/tinacms/commit/5295e077f0d279c35686a0e481a15e33a4877e3b
    label: security-advisories@github.com
  - url: 'https://github.com/tinacms/tinacms/pull/7523'
    label: security-advisories@github.com
  - url: >-
      https://github.com/tinacms/tinacms/releases/tag/@tinacms/web-components@0.2.1
    label: security-advisories@github.com
  - url: 'https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg'
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-c42q-qvc3-j6vg'
tags:
  - nvd
  - ghsa
  - npm
aliases:
  - GHSA-c42q-qvc3-j6vg
ecosystem: npm
ingestedAt: '2026-10-09T21:12:42.322Z'
---

## Overview

Tina is a headless content management system. Prior to 0.2.1, the tina-markdown element in packages/@tinacms/web-components/src/tina-markdown.js assigns a rich-text node.url value directly to an anchor href without validating the URL scheme. A content author can store a link using a script-capable scheme, and a visitor who clicks the rendered link executes attacker-controlled script in the site's origin. The script can access same-origin application data and, when the visitor is an editor or administrator, may expose credentials stored by the TinaCMS admin on that origin. This issue is fixed in version 0.2.1.

## Remediation

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

## Package advisory (CVE-2026-108260)

Affected packages:

- `@tinacms/web-components <= 0.2.0`

Patched in:

- `@tinacms/web-components 0.2.1`

Source: https://github.com/advisories/GHSA-c42q-qvc3-j6vg