High severity · published Aug 5, 2026
CVE-2026-9130
Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement
7.1
CVSS
0.3%
EPSS
No
On KEV
Description
IBM Langflow OSS 1.0.0 through 1.10.3 contain an authorization bypass vulnerability in the MemoryComponent that allows authenticated users to access chat history of other users via session_id collision. The MemoryComponent.retrieve_messages and store_message methods filter on session_id without validating flow_id or user_id ownership, enabling cross-user information disclosure through multiple authenticated API endpoints including /api/v1/run/*, /api/v1/responses, and /api/v2/workflow/*. This vulnerability only affects multi-user deployments with LANGFLOW_AUTO_LOGIN=False.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LO
Langflow OSS · IBM
1.0.0 through 1.10.3 · source: vendor
LA
Langflow · Langflow
1.0.0 before 1.11.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9130
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-9130
Vendor Advisory
https://www.ibm.com/support/pages/node/7282647
More from Langflow OSS
9.8
CVE-2026-9198
Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation
10.0
CVE-2026-10134
Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows
10.0
CVE-2026-10561
Unauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Injection
9.9
CVE-2026-19295
Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement
9.9
CVE-2026-12946
Remote Code Execution in CUGA Component CodeAgent