CVE-2026-52111: n/a

This vulnerability exists in fast-note-sync-service versions <=2.13.7 where the admin configuration endpoint improperly exposes the authTokenKey. An unauthenticated remote attacker can leverage this exposure to escalate privileges, gaining unauthorized administrative access. The CVSS 3.1 base score is 9.8, reflecting network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently provided, and no known exploits are reported in the wild.

Successful exploitation allows a remote attacker to escalate privileges without authentication, potentially leading to full administrative control over the fast-note-sync-service instance. This compromises confidentiality, integrity, and availability of the service and any data it manages.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the admin configuration endpoint to trusted networks and monitor for suspicious activity related to privilege escalation attempts.