Detections
Analytics

SCA: security update for @budibase/backend-core (GHSA-4f9j-vr4p-642r)

high Tenable Cloud Security Plugin ID 440805

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-42239)

Solution

Update the @budibase/backend-core library and its related packages to version 3.35.10 or later.

See Also

https://github.com/advisories/GHSA-4f9j-vr4p-642r

Plugin Details

Severity: High

ID: 440805

Version: Revision 1.10

Type: Local

Family: SCA Checks

Published: 4/24/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.8

Percentile: 57.68

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.7

Temporal Score: 6

Vector: CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:N

CVSS Score Source: CVE-2026-42239

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/24/2026

Vulnerability Publication Date: 4/24/2026

Reference Information

CVE: CVE-2026-42239