CVE-2026-42239

high

Published 2026-05-07 · Modified 2026-05-11

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

8.1

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.1

Description

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

Predictions

Exploit likelihood

88%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact

Ecosystem	Package	Vulnerable	Fixed
npm	@budibase/backend-core	`<3.35.10`	`3.35.10`
NPM	@budibase/backend-core	`< 3.35.10`	`3.35.10`

References

CWEs

CWE-1004

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.