GHSA-rwrp-9823-p2xq: Flowise: Incomplete Credential Redaction Exposes Secrets via API

The GET /api/v1/credentials/:id endpoint decrypts stored credential data and returns it in the plainDataObj field of the API response. While a redactCredentialWithPasswordType() function masks fields defined with type: 'password' in their component schema, many credential types store highly sensitive data (database connection URLs with embedded passwords, Google service account JSON with RSA private keys, AWS access keys) in fields defined as type: 'string'. These string-type fields are returned in full plaintext without any redaction.

Any authenticated user with credentials:view permission can retrieve the raw secrets of any credential in their workspace by calling this endpoint.