CVE-2026-31818
High
High exploit probability or critical severity with a known exploit.
CVSS base
9.6
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
EPSS — probability of exploitation (30 days)
0.4%
31.5th percentile
CISA KEV
Not listed
Weakness / dates
CWE-918
Published 2026-04-03 · modified 2026-07-24
Description
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.