Description

Budibase is an open-source low-code platform. Prior to version 3.35.10, the budibase:auth cookie containing the JWT session token is set with httpOnly: false at packages/backend-core/src/utils/utils.ts:218. JavaScript can read this cookie via document.cookie. This means every XSS becomes a full account takeover — the attacker steals the JWT and has persistent access to the victim's account. The cookie also lacks secure: true (sent over plaintext HTTP) and sameSite attribute. This issue has been patched in version 3.35.10.

INFO

Published Date :

2026-05-07T18:49:59.180Z

Last Modified :

2026-05-07T19:39:45.605Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-42239 vulnerability.

Vendors Products
Budibase
  • Budibase
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-42239.

URL Resource
https://github.com/Budibase/budibase/releases/tag/3.35.10 cve-icon cve-icon
https://github.com/Budibase/budibase/security/advisories/GHSA-4f9j-vr4p-642r cve-icon cve-icon cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact