CVE-2026-42239

Published: Mag 07, 2026 Last Modified: Mag 07, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,1
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: high
User Interaction: required
Scope: changed
Confidentiality: high
Integrity: high
Availability: none

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0003
Percentile
0,1th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

1004

Sensitive Cookie Without 'HttpOnly' Flag

Incomplete
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity
Potential Impacts:
Read Application Data Gain Privileges Or Assume Identity
Applicable Platforms
Technologies: Web Based, Web Server
Likelihood of Exploit: Medium
View CWE Details
https://github.com/Budibase/budibase/security/advisories/GH…
https://github.com/Budibase/budibase/security/advisories/GHSA-4f9j-vr4p-642r
https://github.com/Budibase/budibase/releases/tag/3.35.10
https://github.com/Budibase/budibase/releases/tag/3.35.10
https://github.com/Budibase/budibase/security/advisories/GH…
https://github.com/Budibase/budibase/security/advisories/GHSA-4f9j-vr4p-642r