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 .
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
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/Budibase/budibase/security/advisories/GHSA-8xr5-pggf-26jq (vendor-advisory)
- www.vulncheck.com/advisories/budibase-before-3.45.0-arbitrary-local-file-read-v… (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.