Resource exhaustion in Langflow - CVE-2026-55450
Published: June 17, 2026
Vulnerability identifier: #VU134724
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-55450
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can upload any amount of data to the server without any limitations and perform a denial of service (DoS) attack or gain access to sensitive information.
Affected software
Langflow
How to mitigate CVE-2026-55450
Install updates from vendor's website.
Langflow - update to 1.9.1