Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-108260— @tinacms/web-components: `tina-markdown` writes rich-text link URLs into `href` without scheme validation, allowing stored XSS

Quick assessment

Affected
tinacms tinacms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tina 是一个无头内容管理系统（Headless CMS）。在 0.2.1 版本之前， 文件中的 组件会直接将富文本节点的 值赋给锚点（ ）标签的 属性，而未对 URL 协议进行验证。内容作者可以存储使用支持脚本执行的协议（如 ）的链接，当访客点击该渲染后的链接时，将在站点源上下文中执行攻击者控制的脚本。该脚本可以访问同源的应用程序数据；如果访客是编辑器或管理员，则可能暴露 TinaCMS 管理界面在该源上存储的凭据。此问题已在 0.2.1 版本中得到修复。

CVSS 7.6 · High
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-108260

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
@tinacms/web-components: `tina-markdown` writes rich-text link URLs into `href` without scheme validation, allowing stored XSS
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
tinacms tinacms < 3.14.0 -
@tinacms web-components < 0.2.1 -

II. Public POCs for CVE-2026-108260

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-108260

请登录查看更多情报信息。

Other References for CVE-2026-108260 (4)

Same Patch Batch · tinacms · 2026-10-09 · 3 CVEs total

CVE-2026-108261 9.3 CRITICAL TinaCMS admin preview iframe loads an attacker-controlled origin from the URL fragment
CVE-2026-108259 8.2 HIGH Tina: Code injection via unescaped Git branch name in generated client source

IV. Related Vulnerabilities

Same product: tinacms
Same vendor: tinacms
Same weakness: CWE-79

V. Comments for CVE-2026-108260

No comments yet

Leave a comment