CVE-2026-31309

Published Jul 8, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Improper Authorization in Mysterium Node API Allows Full Node Takeover
Type Values Removed Values Added
Title Improper Authorization in Mysterium Node API Allows Full Node Takeover
Type Values Removed Values Added
Title Improper Authorization in Mysterium Node Allows Unauthenticated Configuration Overwrite
Type Values Removed Values Added
Title Improper Authorization in Mysterium Node Allows Unauthenticated Configuration Overwrite
Type Values Removed Values Added
Title Improper Authorization Enables Full Node Takeover in Mysterium Node
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Improper Authorization Enables Full Node Takeover in Mysterium Node
Type Values Removed Values Added
Description Improper authorization in the /tequilapi/config/user endpoint of Mysterium Node before v1.36.0 allows unauthenticated attackers to arbitrarily overwrite the node's configuration and achieve a full node takeover via supplying a crafted POST request. 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.
References
Type Values Removed Values Added
Title Improper Authorization Enables Full Node Takeover
Type Values Removed Values Added
Title Improper Authorization Enables Full Node Takeover
Type Values Removed Values Added
Title Improper Authorization Allows Node Configuration Overwrite and Full Takeover
Type Values Removed Values Added
Title Improper Authorization Allows Node Configuration Overwrite and Full Takeover
Type Values Removed Values Added
Title Unauthorized configuration overwrite via /tequilapi/config/user endpoint
Weaknesses CWE-284
Type Values Removed Values Added
Weaknesses CWE-862
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Unauthorized configuration overwrite via /tequilapi/config/user endpoint
Weaknesses CWE-284

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jul 16, 2026, 12:21 PM
Reserved
Mar 9, 2026, 12:00 AM
Status
Deferred
Published
Jul 8, 2026, 10:17 PM
Modified
Jul 16, 2026, 1:16 PM