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VULNERABILITIES

CVE-2026-31309 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA: CISA-ADPCVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/sch8ill/CVE-2026-31309 CISA-ADPExploitTechnical Description
https://github.com/mysteriumnetwork/node/ [email protected]ProductSource CodeVendor
https://github.com/mysteriumnetwork/node/commit/bc099fcaff59fee9c8a8f8e07ffff5b3c5df2bb9 [email protected]Source CodeVendor
https://github.com/sch8ill/CVE-2026-31309 [email protected]ExploitTechnical Description

Weakness Enumeration

CWE-IDCWE NameSource
CWE-862Missing AuthorizationCISA-ADP

Affected Products

ProductVersions
Mysterium Node
< 1.36.0 (semver)

CPE

  • No CPEs found in CPE dictionary for this product.

Remediation

  • Upgrade: 1.36.0moderate effort

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-31309
NVD Published Date:
Jul 8, 2026
NVD Last Modified:
Jul 16, 2026
Source:
[email protected]
CVE-2026-31309 Details - Not Deferred