Code Injection in Langflow - CVE-2026-48519
Published: May 28, 2026
Vulnerability identifier: #VU132662
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-48519
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Langflow
Affected software:
Langflow
Langflow
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to improper control of code generation in the Shareable Playground public flow execution endpoint when processing a crafted JSON payload for the data.nodes[X].data.node.template.code.value field. A remote attacker can send a specially crafted request to execute arbitrary code.
User interaction is required to access and run the shared public flow link.
How to mitigate CVE-2026-48519
Install security update from vendor's website.