CVE-2026-54353

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.

CVSS v3 8.5 HIGH

8.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/Budibase/budibase/security/advisories/GHSA-gfq7-5x4g-3xhf	Exploit Vendor Advisory
https://github.com/Budibase/budibase/security/advisories/GHSA-gfq7-5x4g-3xhf	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:budibase:budibase:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-26 21:16

Updated : 2026-06-30 20:05

NVD link : CVE-2026-54353

Mitre link : CVE-2026-54353

CVE.ORG link : CVE-2026-54353

JSON object : View

Products Affected

budibase

budibase

CWE

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

CWE-918

Server-Side Request Forgery (SSRF)

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