CVE-2026-9130CWE-639

CVE-2026-9130

High · published August 5, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
21.2
In the wild
Unconfirmed
What it is

IBM Langflow OSS 1.0.0 through 1.10.3 contain an authorization bypass vulnerability in the MemoryComponent that allows authenticated users to access chat history of other users via session_id collision. The MemoryComponent.retrieve_messages and store_message methods filter on session_id without validating flow_id or user_id ownership, enabling cross-user information disclosure through multiple authenticated API endpoints including /api/v1/run/*, /api/v1/responses, and /api/v2/workflow/*. This vulnerability only affects multi-user deployments with LANGFLOW_AUTO_LOGIN=False.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00297 · 21.2th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-08-05T23:17Z
Affected products (1)
ProductVersionsFixed in
langflow/langflow≥ 1.0.0, < 1.11.01.11.0
References (1)
https://www.ibm.com/support/pages/node/7282647 · [email protected]
EPSS history
Timeline
  • 05 AUG 18:16Z
    Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement
    cvelistv5