IBM Langflow OSS 1.0.0-1.10.3 RCE via improperly validated config
CVE-2026-17630 Published on August 5, 2026
Langflow is affected by security vulnerabilities in Model Context Protocol features
IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote attacker to execute arbitrary code due to improper validation of configuration parameters.
Vulnerability Analysis
CVE-2026-17630 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Denylist / Deny List Vulnerability?
The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete, leading to resultant weaknesses. Developers often try to protect their products against malicious input by performing tests against inputs that are known to be bad, such as special characters that can invoke new commands. However, such lists often only account for the most well-known bad inputs. Attackers may be able to find other malicious inputs that were not expected by the developer, allowing them to bypass the intended protection mechanism.
CVE-2026-17630 has been classified to as a Denylist / Deny List vulnerability or weakness.
Products Associated with CVE-2026-17630
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Affected Versions
IBM Langflow OSS:- Version 1.0.0, <= 1.10.3 is affected.