Is CVE-2026-54356 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-54356?

CVE-2026-54356 has a CVSS v3 severity of HIGH (7.1).

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CVE-2026-54356

Description

Budibase is an open-source low-code platform. Prior to 3.41.3, POST /api/attachments/:datasourceId/url in packages/server/src/api/routes/static.ts and packages/server/src/api/controllers/static/index.ts allows an authenticated published-app user with the BASIC role to supply attacker-controlled bucket and key values and obtain signedUrl and publicUrl values backed by stored S3 datasource credentials. This issue is fixed in version 3.41.3.