CVE-2026-54351
HighCVSS 8.2Exploitation Probability (EPSS)
Low risk37th percentile — higher than 37% of all known CVEs
Summary
Budibase prior to version 3.39.9 has a vulnerability in the webhook trigger endpoint, which is publicly accessible and passes the full HTTP request body into automation execution parameters. An attacker can overwrite the internal appId property, allowing automation execution in the victim's context and granting full read/write access to the victim's database.
Risk Assessment
The risk involves unauthorized access and modification of data in the victim's context, potentially leading to sensitive information leakage or system integrity compromise.
Recommendation
Immediately upgrade Budibase to version 3.39.9 or later, which includes a fix for this vulnerability.
Original NVD description (English source)
Budibase is an open-source low-code platform. Prior to 3.39.9, the webhook trigger endpoint in Budibase is publicly accessible and passes the full HTTP request body into automation execution parameters. A mass assignment vulnerability in externalTrigger() allows an attacker to overwrite the internal appId property by including it in the webhook POST body. When the automation is processed asynchronously (the default path for webhooks without a collect step), the worker executes the attacker-defined automation in the context of the victim's workspace, granting full read/write access to the victim's database. This vulnerability is fixed in 3.39.9.