CVE-2026-13448 Code injection in Langflow OSS
Unauthenticated attackers can execute arbitrary code, cause denial of service, and access credentials via insufficiently authorized API endpoints in Langflow OSS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-13448?
CVE-2026-13448 is a high-severity code injection vulnerability in Langflow Langflow, published on 17 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM Langflow OSS 1.0.0 through 1.10.1 Lanflow OSS contains an unauthenticated remote code execution vulnerability in the public flow build endpoint ( /api/v1/build_public_tmp/{flow_id}/flow ). The vulnerability stems from an incomplete denylist in the validate_public_flow_no_code_execution() function that fails to block several code-execution agent components including OpenDsStarAgent, CodeActAgentSmolagents, and CSVAgent.
Weakness: CWE-184
Which versions are affected by CVE-2026-13448?
It affects 1 product.
Products include Langflow Langflow.
How do I fix CVE-2026-13448?
No fix has been published for CVE-2026-13448 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-13448 being exploited?
There is no known exploitation of CVE-2026-13448 in the wild and no public exploit code.
Other vulnerabilities in Langflow Langflow
Sources
Also known as GHSA-gqcf-9v26-p4pr.