PT-2026-37181 · Budibase · Budibase

Ayushparkara · Published 2026-04-24 · Updated 2026-06-04 · CVE-2026-42239

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Budibase versions prior to 3.35.10

Description The budibase:auth cookie, which contains the JWT session token, is configured with httpOnly: false in the packages/backend-core/src/utils/utils.ts file. This allows JavaScript to access the cookie via document.cookie, enabling an attacker to steal the JWT and achieve full account takeover if a Cross-Site Scripting (XSS) flaw is present. Additionally, the cookie lacks the secure: true flag, meaning it can be sent over plaintext HTTP, and it lacks the sameSite attribute, making it susceptible to cross-site request attachment.

Recommendations Update to version 3.35.10.

Exploit

Fix

Weakness Enumeration

CWE-1004

Related Identifiers

CVE-2026-42239

GHSA-4F9J-VR4P-642R

Affected Products

Budibase

References · 8

• 🔥 https://github.com/Budibase/budibase/security/advisories/GHSA-4f9j-vr4p-642r · Exploit
• https://github.com/Budibase/budibase/releases/tag/3.35.10 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-42239 · Security Note
• https://osv.dev/vulnerability/GHSA-4f9j-vr4p-642r · Vendor Advisory
• https://github.com/Budibase/budibase · Note
• https://twitter.com/VulmonFeeds/status/2052502084176478633 · Twitter Post
• https://twitter.com/CVEnew/status/2052477941032927548 · Twitter Post
• https://t.me/cveNotify/166030 · Telegram Post