CVE-2026-19301: Langflow is vulnerable to Server-Side Request Forgery due to missing or bypassable URL validation in multiple components
Published Aug 28, 2026
·Updated
IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to obtain sensitive information due to server-side request forgery.
Other sources
Langflow OSS could allow a remote authenticated attacker to obtain sensitive information due to server-side request forgery.
— IBM
Affected Software
1 affected component
IBM Langflow OSS<=1.0.0-1.11.2
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
IBM Langflow OSSto a version that resolves this vulnerability.Fixed in 1.11.3
Event History
Aug 28, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Sep 4, 2026
CVE Published
via MITRE·04:04 PM
Data Sourced
via MITRE·04:04 PM
RemedyDescriptionSeverityWeakness
Frequently Asked Questions
1
Does an attacker need valid credentials to exploit this issue?
Yes. The reported attack scenario requires a remote authenticated attacker, so an attacker must be able to authenticate to the affected Langflow OSS instance.