IBM Langflow OSS 1.0.0 through 1.12.3 could allow an authenticated attacker with a read or share grant on a target flow to retrieve the flow owner's stored third-party credentials in cleartext from the API response.
IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.12.4. https://pypi.org/project/langflow/1.12.4/
For Langflow OSS versions 1.0.0 - 1.12.3, follow the Prepare to upgrade instructions and release-specific configuration changes https://docs.langflow.org/release-notes , including backing up your existing installation, then follow the Langflow OSS installation instructions https://docs.langflow.org/get-started-installation to install version 1.12.4 and test your flows.