CVE-2026-42239highCWE-1004

CVE-2026-42239: fallo de gravedad alta en budibase

Budibase auth session cookies are set with httpOnly:false — any XSS can lead to full account takeover

Publicada el

Seguir esta CVE+ Monitorear budibase+ Monitorear @budibase/backend-core

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

21Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 8.1epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
Productos afectados
Budibase · budibase
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