Cyber Posture

CVE-2026-42239

High

Published: 07 May 2026

Published
07 May 2026
Modified
07 May 2026
KEV Added
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Patch
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CVSS Score 8.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
EPSS Score 0.0003 7.5th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-42239 is a high-severity Sensitive Cookie Without 'HttpOnly' Flag (CWE-1004) vulnerability. Its CVSS base score is 8.1 (High).

Operationally, ranked at the 7.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

NVD 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…

more

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.

Deeper analysisAI

Automated synthesis unavailable for this CVE.

Details

CWE(s)
CWE-1004

CVEs Like This One

CVE-2026-25136Shared CWE-1004
CVE-2026-25733Shared CWE-1004
CVE-2026-35575Shared CWE-1004

References