SB2026052114 - Resource exhaustion in Langflow OSS

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Main Vulnerability Database SB2026052114

SB2026052114 - Resource exhaustion in Langflow OSS

Published: May 21, 2026

Security Bulletin ID SB2026052114
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Resource exhaustion (CVE-ID: CVE-2026-7528)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote user can upload unlimited files to the Langflow OSS server via the deprecated /api/v1/upload/{flow_id} endpoint without authentication or validation, leading to potential disk space exhaustion (DoS) and information disclosure through absolute file path leakage in API responses.


Remediation

Install update from vendor's website.

References