SB2025082559 - Multiple vulnerabilities in Langflow

Description

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2025-57760)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to escalate privileges.

The vulnerability exists due to application does not properly impose security restrictions. A remote user with RCE access can invoke the internal CLI command langflow superuser to create a new administrative user. 

2) Missing Authorization (CVE-ID: CVE-2026-34046)

CWE-ID: CWE-862 - Missing Authorization

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote user to read, modify, and delete arbitrary flows.

The vulnerability exists due to missing authorization in GET/PATCH/DELETE /api/v1/flow/{flow_id} via the _read_flow helper when handling requests for flow IDs while authentication is enabled. A remote user can send a request for another user's flow UUID to read, modify, and delete arbitrary flows.

Exposed flow data may include embedded plaintext API keys.

Remediation

Install update from vendor's website.

References

• https://github.com/langflow-ai/langflow/security/advisories/GHSA-4gv9-mp8m-592r
• https://github.com/langflow-ai/langflow/security/advisories/GHSA-8c4j-f57c-35cf
• https://github.com/advisories/GHSA-8c4j-f57c-35cf