Vulnerability details
CVE-2026-48146
Budibase budibase
Budibase: SSRF via OAuth2 Config Validation — Missing fetchWithBlacklist Protection
CVSS 3.1
7.7High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.7High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Budibase | budibase | < 3.39.0 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://github.com/Budibase/budibase/security/advisories/GHSA-g6qx-g4pr-92v7 x_refsource_CONFIRM
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Details
- Published
- 2026-05-27
- Last updated
- 2026-05-28
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.21%
Probability of exploitation in 30 days
12.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-918Server-Side Request Forgery (SSRF)