CVE-2026-73407

critical · 9

Budibase is an open-source low-code platform. Prior to 3.40.1, RestIntegration._req in packages/server/src/integrations/rest.ts attached credentials from getAuthHeaders and defaultHeaders without requiring the final request destination to match the datasource origin. An unauthenticated caller of a PUBLIC POST /api/v2/queries/:queryId query could supply an absolute or parameterized path to an attacker-controlled host and receive the stored bearer, basic, or static-header credentials. This issue is fixed in version 3.40.1.

CVSS

0.5%

EPSS (exploit prob.)

43rd

EPSS percentile

2026-08-12

Published

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-22

References

https://github.com/Budibase/budibase/commit/8b1bca71501b11c68310351ef4f2c3028b2d5f08
https://github.com/Budibase/budibase/pull/19239
https://github.com/Budibase/budibase/releases/tag/3.40.1
https://github.com/Budibase/budibase/security/advisories/GHSA-mqhr-6j6h-74p5
https://github.com/Budibase/budibase/security/advisories/GHSA-mqhr-6j6h-74p5

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-73407