CVE-2026-54353

Description

Budibase is an open-source low-code platform. Prior to 3.39.9, authenticated users with automation permissions can bypass Budibase's SSRF blacklist through DNS rebinding. The outbound fetch flow validates a hostname against the blacklist before the request is sent, but the actual socket connection later performs a separate DNS lookup through node-fetch. Since the validated IPs are never pinned to the connection, an attacker-controlled hostname can return a public IP during validation and a private/internal IP during the real connection. This results in a non-blind SSRF primitive against internal services reachable from the Budibase host, including loopback, RFC1918 ranges, and cloud metadata endpoints. This vulnerability is fixed in 3.39.9.

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Produits concernés

• budibase
• Budibase budibase

Scores CVSS

Faiblesses (CWE)

• CWE-367
• CWE-918

Références

• https://github.com/Budibase/budibase/security/advisories/GHSA-gfq7-5x4g-3xhf ExploitVendor Advisory
• https://github.com/Budibase/budibase/security/advisories/GHSA-gfq7-5x4g-3xhf ExploitVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories