Vulnerability · Published Aug 24, 2026 · Assigned by VulnCheck
CVE-2026-76837Baserow before 2.3.0 Stored Cross-Site Scripting via Rich Text Mention Display Name
Medium 6.4
In plain English
A medium-severity cross-site scripting in Baserow from Baserow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Official description
Baserow interpolates a user's display name into the rich-text mention markup without HTML encoding. PATCH /api/user/account/ stores the first_name value verbatim, and the mention renderer in web-frontend/modules/core/editor/mention.js builds its element with a template literal that places the name into a data-label attribute and the element body unescaped. A name containing a double quote closes that attribute and the opening tag, so following markup lands in the element content. The result is rendered through v-html by the rich-text field components, so any rich-text cell mentioning the account executes the stored script for every workspace member who views the table, without a click. Any workspace member, at the lowest permission level, can set the name and reach every other member of the workspace, and the payload persists until the name is changed or the mentioning row is removed. Version 2.3.0 escapes the value before interpolation.
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
References
- https://github.com/baserow/baserow product
- https://github.com/baserow/baserow/pull/5618 issue-tracking, patch
- https://github.com/baserow/baserow/commit/a870dc0d38c9 patch
- https://github.com/baserow/baserow/blob/2.2.2/web-frontend/modules/core/editor/mention.js technical-description
- VulnCheck Advisory: Baserow before 2.3.0 Stored Cross-Site Scripting via Rich Text Mention Display Name third-party-advisory