CVE-2026-54351
Budibase: Mass Assignment in Webhook Trigger Allows Cross-Workspace Automation Execution via appId Override
Description
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.
INFO
Published Date :
June 26, 2026, 8:45 p.m.
Last Modified :
June 26, 2026, 8:45 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-54351
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Budibase to version 3.39.9 or newer.
- Ensure webhook endpoints are secured.
- Review automation execution contexts.
- Monitor for unauthorized database access.
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CVE-2026-54351 vulnerability anywhere in the article.