Vulnerability · Published Aug 12, 2026 · Assigned by GitHub_M

CVE-2026-73308Budibase: OAuth2 Token Disclosure via Automation Test Results Broadcast to Other Builders

Medium 5.7

In plain English

A medium-severity information exposure in budibase from Budibase. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).

Severity (CVSS 3.1)5.7Medium

Exploit odds (30 days)0.4%top 64.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Budibase is an open-source low-code platform. Prior to 3.39.25, packages/server/src/api/controllers/automation.ts returned automation test results containing trigger.outputs.user.oauth2, broadcast BuilderSocketEvent.AutomationTestProgress to the app room, and stored progress in packages/server/src/automations/testProgress.ts without user scoping. A co-builder could receive or poll another SSO-authenticated builder test and obtain OAuth2 access and refresh tokens. The fix adds sanitizeAutomationTestResult and isolates progress by user. This issue is fixed in version 3.39.25.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	@budibase/server	no fix listed	GHSA-gh4h-34gr-87r7

Affected products (as reported)

Vendor	Product	Versions
Budibase	budibase	< 3.39.25

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

References

https://github.com/Budibase/budibase/security/advisories/GHSA-gh4h-34gr-87r7 x_refsource_CONFIRM
https://github.com/Budibase/budibase/pull/19107 x_refsource_MISC
https://github.com/Budibase/budibase/commit/bca426de7dc36d680285295655dc640dea2aab21 x_refsource_MISC
https://github.com/Budibase/budibase/releases/tag/3.39.25 x_refsource_MISC