What is CVE-2026-67311?

CVE-2026-67311 is a medium-severity vulnerability in Budibase, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.8/10. Published 2026-08-01.

How severe is CVE-2026-67311?

Medium severity. CVSS v3 base score is 6.8 out of 10.

SSRF in Budibase

CVE-2026-67311

Budibase before 3.38.1 contains a server-side request forgery vulnerability in the REST datasource integration that fails to validate HTTP redirects against the IP blacklist. Attackers with Builder role can configure a REST datasource pointing to an external server that returns a redirect to internal IP addresses, bypassing blacklist protection to access cloud metadata endpoints and internal services.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.003 (24.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N.

Affected products

Budibase — versions 0, 3.38.1

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-67311?: CVE-2026-67311 is a medium-severity vulnerability in Budibase, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.8/10. Published 2026-08-01.
How severe is CVE-2026-67311?: Medium severity. CVSS v3 base score is 6.8 out of 10.