SB2026032737 - Remote code execution in Langflow
Published: March 27, 2026
Security Bulletin ID
SB2026032737
Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Code injection (CVE-ID: CVE-2026-33017)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation at the "/api/v1/build_public_tmp/{flow_id}/flow" endpoint. A remote attacker can send a specially crafted HTTP POST request to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.