What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-03 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• budibase: before 3.32.5 — fixed in 3.32.5

How to fix

Upgrade to a fixed version: budibase 3.32.5. Check the vendor advisory for mitigations.

References

• https://github.com/Budibase/budibase/commit/c9ccf0c19e5849f1bda96401aa33f97c99cd8cd6
• https://github.com/Budibase/budibase/pull/18243
• https://github.com/Budibase/budibase/releases/tag/3.32.5
• https://github.com/Budibase/budibase/security/advisories/GHSA-gp5x-2v54-v2q5

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