CVE-2026-31818 — Budibase: Server-Side Request Forgery via REST Connector with Empty Default Blacklist
Budibase is an open-source low-code platform. Prior to version 3.33.4, a server-side request forgery (SSRF) vulnerability exists in Budibase's REST datasource connector. The pla…
Published: 2026-04-03 · CVSS: 9.6 · CVSS 3.1
Budibase is an open-source low-code platform. Prior to version 3.33.4, a server-side request forgery (SSRF) vulnerability exists in Budibase's REST datasource connector. The platform's SSRF protection mechanism (IP blacklist) is rendered completely ineffective because the BLACKLIST_IPS environment variable is not set by default in any of the official deployment configurations. When this variable is empty, the blacklist function unconditionally returns false, allowing all requests through without restriction. This issue has been patched in version 3.33.4.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7