IBM Langflow OSS 1.0.0-1.11.1 Improper Auth RCE
CVE-2026-18891 Published on August 28, 2026
Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities
IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary flows and access sensitive information due to improper authentication.
Vulnerability Analysis
CVE-2026-18891 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is an authentification Vulnerability?
When an actor claims to have a given identity, the software does not prove or insufficiently proves that the claim is correct.
CVE-2026-18891 has been classified to as an authentification vulnerability or weakness.
Products Associated with CVE-2026-18891
Want to know whenever a new CVE is published for IBM Langflow Oss? stack.watch will email you.
Affected Versions
IBM Langflow OSS:- Version 1.0.0, <= 1.11.1 is affected.