Is CVE-2026-109321 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-109321?

CVE-2026-109321 has a CVSS v3 severity of CRITICAL (9.1).

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CVE-2026-109321

Description

Grav Login OAuth plugin (grav-plugin-login-oauth) before 1.4.3 provisions OAuth accounts as ordinary Grav users with a deterministic <provider>.<id> username and an unsalted MD5 hash of the provider identifier as the password, without disabling password login. Unauthenticated remote attackers who learn or guess a provider identifier can reproduce these credentials and log in, gaining administrative control of privileged accounts.