CVE-2026-18972CWE-290
CVE-2026-18972
Critical · published August 11, 2026
What it is
An authenticated attacker can spoof another GUI user's identity by sending their request with the custom header \"Grpc-Metadata-USER\". This can lead to an account takeover attack from a user with low privileges to administrator.
The record
Technical detail
- CVSS v3.1
- 9.6 · CRITICAL
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
- CVSS v4.0
- Not supplied
- EPSS
- 0.00350 · 27.4th percentile
- Weakness
- CWE-290 · Authentication Bypass by Spoofing
- Published
- 2026-08-11T17:17Z
References (1)
EPSS history
Timeline