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Vulnerability record · CVE-2026-48146 · published 27 May 2026

CVE-2026-48146: Server-side request forgery (SSRF) vulnerability

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.

7.7 CVSS 3.1 High EPSS 0.34% · top 75.0% CWE-918 · Server-side request forgery (SSRF) Deferred
7.7CVSS 3.1 base score
0.34%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

LinkTags
https://github.com/Budibase/budibase/security/advisories/GHSA-g6qx-g4pr-92v7
https://github.com/Budibase/budibase/security/advisories/GHSA-g6qx-g4pr-92v7

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Source: NIST National Vulnerability Database (record CVE-2026-48146), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.