CVE-2026-7646 Langflow is affected by security vulnerabilities in Model Context Protocol features
Attackers can read arbitrary server files, including secrets and databases, via crafted MCP requests in Langflow OSS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-7646?
CVE-2026-7646 is a medium-severity path traversal vulnerability in Langflow Langflow, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IBM Langflow OSS 1.0.0 through 1.10.3 allows users to read arbitrary files from the server filesystem, including other users' uploaded documents, the JWT signing secret, the SQLite database, and process environment variables, by sending a crafted MCP `resources/read` request with a URL-encoded path traversal sequence in the filename.
Weakness: CWE-22
Which versions are affected by CVE-2026-7646?
It affects 1 product.
Products include Langflow Langflow.
How do I fix CVE-2026-7646?
No fix has been published for CVE-2026-7646 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-7646 being exploited?
There is no known exploitation of CVE-2026-7646 in the wild and no public exploit code.
Other vulnerabilities in Langflow Langflow
Sources
Also known as GHSA-x37c-x545-wrmw.