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.

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

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References
Link Providers
https://github.com/mysteriumnetwork/node/ cve-icon
https://github.com/mysteriumnetwork/node/blob/1.35.5/tequilapi/tequil/routes.go#L26 cve-icon
https://github.com/mysteriumnetwork/node/commit/83051199cd641dd4ed9057b958e5616df1309f19 cve-icon
https://github.com/mysteriumnetwork/node/commit/bc099fcaff59fee9c8a8f8e07ffff5b3c5df2bb9 cve-icon
https://github.com/mysteriumnetwork/node/releases/tag/1.35.5 cve-icon
https://github.com/mysteriumnetwork/node/releases/tag/1.36.0 cve-icon
https://github.com/sch8ill/CVE-2026-31309 cve-icon
History

Thu, 09 Jul 2026 04:45:00 +0000

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

Wed, 08 Jul 2026 22:15:00 +0000

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.
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-07-08T21:57:54.877Z

Reserved: 2026-03-09T00:00:00.000Z

Link: CVE-2026-31309

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-07-09T04:30:13Z