CVE-2026-104335 Langflow OSS is affected by multiple vulnerabilities

What is CVE-2026-104335?

CVE-2026-104335 is a high-severity missing authorization vulnerability in Langflow Langflow, published on 6 Oct 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 1.12.2 could allow a remote authenticated attacker to execute arbitrary code due to improper access control.

Weakness: CWE-284

Which versions are affected by CVE-2026-104335?

It affects 1 product.

Products include Langflow Langflow.

How do I fix CVE-2026-104335?

No fix has been published for CVE-2026-104335 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-104335 being exploited?

There is no known exploitation of CVE-2026-104335 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Langflow Langflow

• CVE-2026-9198 IBM Langflow Code Injection Exploited Critical 9.8
• CVE-2026-0770 Langflow Inclusion of Functionality from Untrusted Control Sphere Exploited Critical 9.8
• CVE-2025-3248 Langflow Missing Authentication Exploited Critical 9.8
• CVE-2025-34291 Langflow Origin Validation Error Exploited Critical 9.4
• CVE-2026-33017 Langflow Code Injection Exploited Critical 9.3

All Langflow Langflow vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-75jr-mmgj-gcxq.