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CVE-2026-48153

Budibase: SSRF via OAuth2 token endpoint URL reaches internal hosts and cloud metadata

CVSS 3.1 8.5 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-48153

Published

Budibase is an open-source low-code platform. Prior to 3.39.0, fetchToken in the OAuth2 SDK makes a POST to a builder-supplied URL with plain node-fetch, skipping the blacklist.isBlacklisted check that every other outbound fetch path in the codebase uses. The Joi schema for the OAuth2 URL has no scheme or host restriction. This vulnerability is fixed in 3.39.0.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-48153

Published

budibase

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Budibase",
                    "product": "budibase",
                    "versions": [
                        {
                            "version": "< 3.39.0",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON