Vulnerability details
CVE-2026-48153
Budibase budibase
Budibase: SSRF via OAuth2 token endpoint URL reaches internal hosts and cloud metadata
CVSS 3.1
8.5High
Official description
Budibase is an open-source low-code platform. Prior to 3.39.0, fetchToken in the OAuth2 SDK makes a POST to a builder-supplied URL with plain node-fetch, skipping the blacklist.isBlacklisted check that every other outbound fetch path in the codebase uses. The Joi schema for the OAuth2 URL has no scheme or host restriction. This vulnerability is fixed in 3.39.0.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.5High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/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-4q6h-8p4v-67vq x_refsource_CONFIRM
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Details
- Published
- 2026-05-27
- Last updated
- 2026-05-27
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.17%
Probability of exploitation in 30 days
6.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-918Server-Side Request Forgery (SSRF)