Description
Langflow versions up to and including 1.6.9 contain a chained vulnerability that enables account takeover and remote code execution. An overly permissive CORS configuration (allow_origins='*' with allow_credentials=True) combined with a refresh token cookie configured as SameSite=None allows a malicious webpage to perform cross-origin requests that include credentials and successfully call the refresh endpoint. An attacker-controlled origin can therefore obtain fresh access_token / refresh_token pairs for a victim session. Obtained tokens permit access to authenticated endpoints — including built-in code-execution functionality — allowing the attacker to execute arbitrary code and achieve full system compromise.
Problem types
CWE-346 Origin Validation Error
Product status
Any version
Credits
Fenix Qiao (aka 13ph03nix) from Obsidian Security
Shuyang Wang from Obsidian Security
References
www.obsidiansecurity.com/...gflow-ai-agent-workflow-platform
github.com/langflow-ai/langflow
www.vulncheck.com/...isconfiguration-to-token-hijack-and-rce
