CVE-2026-35218CWE-79

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

High · published April 3, 2026

CVSS v3.1
8.7
EPSS
0%
Percentile
37.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00447 · 37.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-04-03T15:47Z
EPSS history
Timeline
  • 03 APR 15:47Z
    Budibase: Stored XSS via unsanitized entity names rendered with {@html} in Builder Command Palette
    cvelistv5