CVE-2026-10547CWE-284broken-access-control

CVE-2026-10547

Medium · published August 5, 2026

CVSS v3.1
5.9
EPSS
0%
Percentile
33.6
In the wild
Unconfirmed
What it is

IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate ownership in the deprecated POST /api/v1/build/{flow_id}/vertices endpoint, allowing an authenticated user to inject arbitrary graph data into a shared cache for any flow. This may result in cross-user cache pollution, unauthorized workflow execution, or denial of service.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00405 · 33.6th percentile
Weakness
CWE-284 · Improper Access Control
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 18:14Z
    Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement
    cvelistv5