CVE-2026-79742: Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards
Published Sep 8, 2026
·Updated
IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary code due to an incomplete environment variable blocklist.
Other sources
Langflow OSS could allow a remote authenticated attacker to execute arbitrary code due to an incomplete environment variable blocklist.
— IBM
Affected Software
1 affected component
IBM Langflow OSS<=1.0.0-1.11.5
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Langflow OSSto a version that resolves this vulnerability.Fixed in 1.11.6
Event History
Sep 8, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Sep 10, 2026
CVE Published
via MITRE·09:39 PM
Data Sourced
via MITRE·09:39 PM
RemedyDescriptionSeverityWeakness
Frequently Asked Questions
1
Who can exploit this issue?
A remote attacker must be authenticated to IBM Langflow OSS. The available information does not indicate that unauthenticated attackers can exploit it.
2
What capability does successful exploitation provide?
Successful exploitation could allow the authenticated attacker to execute arbitrary code, stemming from an incomplete environment-variable blocklist.