CVE-2026-48151

HIGH

Budibase: Webhook schema endpoint authorization bypass allows unauthenticated mutation of webhook and automation schema

Title source: cna
STIX 2.1

Description

Budibase is an open-source low-code platform. Prior to 3.39.0, the webhook schema-building endpoint is registered under builderRoutes, but the generic authorization middleware skips authorization for all paths matching /api/webhooks/schema. As a result, an unauthenticated caller can update the body schema for a known webhook and mutate the corresponding automation trigger output schema. This vulnerability is fixed in 3.39.0.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0022
EPSS Percentile 12.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-862
Status published
Products (2)
Budibase/budibase < 3.39.0
budibase/server 0 - 3.39.0npm
Published May 27, 2026
Tracked Since May 27, 2026