Authenticated cross-app escalation via unchecked role scope
Published Aug 13, 2026 · Updated Aug 13, 2026
Privilege escalation in Budibase before 3.39.24 allows remote authenticated users to gain cross-app builder access through the public API. In globalRoleValidation.ts, validateGlobalRoleUpdate checks only global flags and passes appBuilder.appId and role.appId without verifying control of the target app. Exploitation requires an app-scoped builder and the expanded public API in a licensed tenant, granting read or write access to other apps' data, datasource configuration, and automations.
Summary
What happened
Privilege escalation in Budibase before 3.39.24 allows remote authenticated users to gain cross-app builder access through the public API. In globalRoleValidation.ts, validateGlobalRoleUpdate checks only global flags and passes appBuilder.appId and role.appId without verifying control of the target app. Exploitation requires an app-scoped builder and the expanded public API in a licensed tenant, granting read or write access to other apps' data, datasource configuration, and automations.
The record
- CVE
- CVE-2026-73305
- Published
- Aug 13, 2026
- Updated
- Aug 13, 2026
- Vendor
- Budibase
- Product
- Budibase
- Classifications
- CWE-862, CWE-863, CWE-269, T1098
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 13, 2026CVE publishedPublication date reported by the CVE source.
- Aug 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 3.39.24
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Budibase role-assignment HTTP proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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