Sensitive Cookie Without "HttpOnly" Flag Affecting @budibase/backend-core package, versions <3.35.10
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Test your applications- Snyk IDSNYK-JS-BUDIBASEBACKENDCORE-16318349
- published28 Apr 2026
- disclosed24 Apr 2026
- creditAyushParkara
Introduced: 24 Apr 2026
NewCVE-2026-42239 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade @budibase/backend-core to version 3.35.10 or higher.
Overview
@budibase/backend-core is a Budibase backend core libraries used in server and worker
Affected versions of this package are vulnerable to Sensitive Cookie Without "HttpOnly" Flag via the set function in the cookie handling process. An attacker can gain unauthorized access to user accounts and exfiltrate authentication tokens by executing malicious JavaScript in the victim's browser, which can read the session cookie due to missing security flags.