Security Advisory
CVE-2026-31309
9.8
CRITICAL
Vulnerability Description
Improper authorization in the /tequilapi/config/user endpoint of Mysterium Node from v1.21.1-rc0 before v1.36.0 allows an unauthenticated attacker to arbitrarily overwrite the node's configuration and achieve a full node takeover via a crafted POST request.
Published Date
July 8, 2026
Official Source
NIST NVD Advisory