Is CVE-2026-18972 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-18972?

CVE-2026-18972 has a CVSS v3 severity of CRITICAL (9.6).

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CVE-2026-18972

Description

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.