CVE-2026-72857: Budibase before 3.40.0 Credential Exposure via STRING Fields

Severity: high (CVSS 7.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-13 · updated 2026-08-31
Weakness: CWE-522

Description

Budibase before 3.40.0 fails to redact datasource credentials stored in STRING typed fields, allowing authenticated users to read MongoDB connection strings and Firebase private keys in plaintext. Attackers with table read permissions can retrieve datasource configurations through the read API to obtain live backend database credentials and service account keys.

Affected products

budibase: before 3.40.0 — fixed in 3.40.0

How to fix

Upgrade to a fixed version: budibase 3.40.0. Check the vendor advisory for mitigations.

References

https://github.com/Budibase/budibase/security/advisories/GHSA-6mpp-gfg5-x2vv
https://www.vulncheck.com/advisories/budibase-before-credential-exposure-via-string-fields
https://github.com/Budibase/budibase/security/advisories/GHSA-6mpp-gfg5-x2vv

Get alerted when CVE-2026-72857 or the next vulnerability affects your stack