Information disclosure in Budibase Server
CVE-2026-100680
Budibase versions before 3.45.0 fail to disable external JSON reference resolution in the OpenAPI/Swagger import validator, allowing authenticated builders to read arbitrary local files. Attackers with builder access can embed file:// references in OpenAPI specifications submitted to the import endpoint to exfiltrate sensitive files including environment variables containing JWT secrets, API keys, and database credentials.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (22.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-8xr5-pggf-26jq) (vendor-advisory)
- VulnCheck Advisory: Budibase before 3.45.0 Arbitrary Local File Read via OpenAPI Import (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100680?
- CVE-2026-100680 is a high-severity vulnerability in Budibase Server, classified under Information Disclosure. CVSS score: 8.1/10. Published 2026-09-26.
- How severe is CVE-2026-100680?
- High severity. CVSS v3 base score is 8.1 out of 10.