CVE-2026-31309
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk25th percentile - higher than 25% of all known CVEs
Summary
An improper authorization vulnerability in the /tequilapi/config/user endpoint of Mysterium Node from v1.21.1-rc0 before v1.36.0 allows an unauthenticated attacker to overwrite the node's configuration and achieve full node takeover via a crafted POST request.
Risk Assessment
An attacker can fully compromise the Mysterium Node, leading to a breach of confidentiality, integrity, and availability of data and services provided by the node.
Recommendation
Immediately upgrade Mysterium Node to version v1.36.0 or later, which includes a fix for this vulnerability.
Original NVD description (English source)
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.