CVE-2026-18904CWE-639

CVE-2026-18904

High · published August 29, 2026

CVSS v3.1
8.2
EPSS
0%
Percentile
22.5
In the wild
Unconfirmed
What it is

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to obtain sensitive information and inject unauthorized messages due to a namespace collision between user identifiers.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00309 · 22.5th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-08-29T02:16Z
Affected products (1)
ProductVersionsFixed in
langflow/langflow≥ 1.0.0, < 1.11.21.11.2
References (1)
https://www.ibm.com/support/pages/node/7284579 · [email protected]
EPSS history
Timeline
  • 30 AUG 16:16Z
    EPSS moved — → 0%
    epss
  • 28 AUG 20:52Z
    Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities
    cvelistv5