CVE-2026-48146
HighSummary
Budibase is an open-source low-code platform. In versions prior to 3.39.0, the OAuth2 token fetch function lacks SSRF protection, allowing users with the BUILDER role to point to internal services to exfiltrate sensitive data.
Risk Assessment
The organization may be at risk of data leakage if users with appropriate permissions exploit this vulnerability to access internal services.
Recommendation
It is recommended to upgrade to version 3.39.0 or later to mitigate this vulnerability and implement appropriate security measures to protect internal services.
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Original NVD description (English source)
Budibase is an open-source low-code platform. Prior to 3.39.0, the OAuth2 token fetch function in packages/server/src/sdk/workspace/oauth2/utils.ts uses raw fetch(config.url) with no SSRF protection. The safe wrapper fetchWithBlacklist() exists in the same codebase and is used in every other outbound HTTP call (automation steps, plugin downloads, object store), but was not applied to the OAuth2 token endpoint. A user with BUILDER role can point the OAuth2 token URL to internal services (CouchDB, cloud metadata) to exfiltrate sensitive data. This vulnerability is fixed in 3.39.0.