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Vulnerability record · CVE-2026-35218 · published 3 April 2026

CVE-2026-35218: Budibase cross-site scripting vulnerability

Budibase · Budibase

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.

8.7 CVSS 3.1 High EPSS 0.45% · top 63.6% CWE-79 · Cross-site scripting
8.7CVSS 3.1 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Budibase/budibase/commit/c9ccf0c19e5849f1bda96401aa33f97c99cd8cd6 Patch
https://github.com/Budibase/budibase/pull/18243 Issue TrackingPatch
https://github.com/Budibase/budibase/releases/tag/3.32.5 ProductRelease Notes
https://github.com/Budibase/budibase/security/advisories/GHSA-gp5x-2v54-v2q5 ExploitVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-35218), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.