IBM Langflow OSS 1.0.0-1.11.5 API Key Session Expiration Bypass
CVE-2026-81268 Published on September 10, 2026

Langflow is vulnerable to authentication bypass and insufficient session expiration
IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute flows and obtain sensitive information due to insufficient session expiration of API keys after user deactivation.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-81268 is exploitable with network access, and requires small amount of user privileges. 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 and integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
NONE

Weakness Type

Insufficient Session Expiration

According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."


Products Associated with CVE-2026-81268

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IBM Langflow Oss
 

Affected Versions

IBM Langflow OSS: