CVE-2026-42239
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.
- Affected products
- Budibase
- Budibase
- < 3.35.10
- Fix
- Available
- CVSS 3.1
- 8.1 HIGH
- EPSS
- 0.3% (20th percentile)
- Weakness
- CWE-1004
- NVD status
- Analyzed
- Published
- 2026-05-07
No indexed exploits for CVE-2026-42239 yet
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No exploit for CVE-2026-42239 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.