Critical severity · published Jun 30, 2026
CVE-2026-10134
Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows
10.0
CVSS
2.3%
EPSS
No
On KEV
Description
IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read and modify every flow, conversation, message, file upload, and saved component in the Langflow database, can connect to internal services, abuse cloud metadata endpoints, laterally move to other tenants on the same Langflow instance, and Establish persistence by modifying the public flow's `tool_code` so normal `/api/v1/build/...` calls by any user re-execute attacker code at each build.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 83% 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 1.9.3 · source: vendor
LA
Langflow · Langflow
1.0.0 through 1.9.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-10134
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-10134
Vendor Advisory
https://www.ibm.com/support/pages/node/7277559
More from Langflow OSS
9.8
CVE-2026-9198
Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation
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
9.9
CVE-2026-13435
Python Interpreter Sandbox Bypass Leading to Sensitive Data Exposure