CVE-2026-55255

CRITICAL EPSS 14.1%
Published Jun 23, 20266d ago · Modified Jun 24, 20265d ago
9.9 CVSS 3.1
Critical
Find Similar
Published Jun 23, 2026 6d ago
Last Modified Jun 24, 2026 5d ago

Description

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.2, an Insecure Direct Object Reference (IDOR) vulnerability in /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request. This vulnerability is fixed in 1.9.2.

CVSS Details

Base Score
9.9
Exploitability
3.1
Impact
6.0
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality High
Integrity High
Availability Low

Threat Intelligence

EPSS Exploit Probability
14.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-639

Affected Products 1

VendorProductVersionRange
langflowlangflow* <1.9.2

References 2

  • github.com https://github.com/langflow-ai/langflow/pull/12832
    Issue TrackingPatch
  • github.com https://github.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2
    Vendor AdvisoryExploitMitigation

Remediation

  • github.com https://github.com/langflow-ai/langflow/pull/12832
    Issue TrackingPatch