CVE-2026-19875CWE-306

CVE-2026-19875

High · published August 19, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
43.4
In the wild
Unconfirmed
What it is

IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to overwrite administrator email information and abuse the server as an outbound relay due to missing authentication for the registration endpoint.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00519 · 43.4th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-08-19T22:16Z
Affected products (1)
ProductVersionsFixed in
langflow/langflow≥ 1.0.0, < 1.10.11.10.1
References (1)
https://www.ibm.com/support/pages/node/7283810 · [email protected]
EPSS history
Timeline
  • 19 AUG 17:38Z
    Unauthenticated Registration POST Endpoint Permits Admin Email Overwrite and Outbound Relay Abuse in Langflow
    cvelistv5