CVE-2026-31818

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.

CVSS 3.1

9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

EPSS

0.4% chance of exploitation in the next 30 days; higher than 31% of CVEs (scores of 2026-10-25)

CWEs

CWE-918, CWE-1188

Published

2026-04-03

Modified

2026-10-06

Record from

the NVD, synced 2026-10-19

Affected

• budibase:budibase

Packages (OSV)

References

• https://github.com/Budibase/budibase/commit/5b0fe83d4ece52696b62589cba89ef50cc009732
• https://github.com/Budibase/budibase/pull/18236
• https://github.com/Budibase/budibase/releases/tag/3.33.4
• https://github.com/Budibase/budibase/security/advisories/GHSA-7r9j-r86q-7g45

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