CVE-2026-85025CWE-863broken-access-control

CVE-2026-85025

Critical · published September 11, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
48.8
In the wild
Unconfirmed
What it is

IBM Langflow OSS 1.0.0 through 1.11.5 Langflow could allow an unauthenticated attacker to execute arbitrary code and access or modify chat sessions through publicly shared MCP project endpoints due to improper enforcement of public-flow security restrictions and session isolation controls.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00614 · 48.8th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-09-11T01:17Z
Affected products (1)
ProductVersionsFixed in
langflow/langflow≥ 1.0.0, < 1.11.61.11.6
References (1)
https://www.ibm.com/support/pages/node/7286666 · [email protected]
EPSS history
Timeline
  • 12 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 10 SEP 20:58Z
    Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards
    cvelistv5