CVE-2026-13445 Path traversal in Langflow OSS
Authenticated attackers can read and modify other users' files via path traversal in the SaveToFile component, breaking storage isolation.
- 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-2026-13445?
CVE-2026-13445 is a high-severity path traversal vulnerability in Langflow Langflow, published on 17 Jul 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 1.10.1 can allow an authenticated attacker to exploit the SaveToFile component to read and modify another user's uploaded files by specifying absolute paths pointing to victim storage locations. In append mode, the attacker's workflow reads victim file contents, appends attacker-controlled data, and uploads a copy containing victim data to the attacker's namespace (confidentiality breach). In overwrite mode, the attacker can replace victim file contents with arbitrary data (integrity breach). This breaks the storage ownership boundary between users.
Weakness: CWE-639
Which versions are affected by CVE-2026-13445?
It affects 1 product.
Products include Langflow Langflow.
How do I fix CVE-2026-13445?
No fix has been published for CVE-2026-13445 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-2026-13445 being exploited?
There is no known exploitation of CVE-2026-13445 in the wild and no public exploit code.
Other vulnerabilities in Langflow Langflow
Sources
Also known as GHSA-8f66-77fw-hmvj.