CVE-2026-35218 HIGH

CVE-2026-35218: Budibase: Stored XSS via unsanitized entity names rendered with {@html} in Builder Command Palette

Vendor Budibase
Product budibase
Weakness CWE-79 · XSS
Published April 3, 2026
Last update April 3, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

What the vulnerability does

01Description

Budibase is an open-source low-code platform. Prior to version 3.32.5, Budibase's Builder Command Palette renders entity names (tables, views, queries, automations) using Svelte's {@html} directive without any sanitization. An authenticated user with Builder access can create a table, automation, view, or query whose name contains an HTML payload (e.g. <img src=x onerror=alert(document.domain)>). When any Builder-role user in the same workspace opens the Command Palette (Ctrl+K), the payload executes in their browser, stealing their session cookie and enabling full account takeover. This issue has been patched in version 3.32.5.

Key dates

02Disclosure timeline

April 3, 2026 CVE published
April 3, 2026 Record updated