CVE-2026-108260
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.6 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
- EPSS
- 0.25% probability · 17th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79, CWE-83
- Source
- security-advisories@github.com
EPSS moved from 0.2% on 10 October 2026 to 0.3% on 26 October 2026.
References
- https://github.com/tinacms/tinacms/commit/5295e077f0d279c35686a0e481a15e33a4877e3b
- https://github.com/tinacms/tinacms/pull/7523
- https://github.com/tinacms/tinacms/releases/tag/@tinacms/web-components@0.2.1
- https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg
- https://github.com/tinacms/tinacms/security/advisories/GHSA-c42q-qvc3-j6vg
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.