CVE-2026-31309

CRITICAL 9.8

CVSS Score

9.8

EPSS Score

0.3%

EPSS Percentile

24th

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.

Vendor	n/a
Product	n/a
Published	Jul 8, 2026
Last Updated	Jul 16, 2026

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Affected Versions

n/a / n/a

n/a

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/mysteriumnetwork/node/ github.com: https://github.com/mysteriumnetwork/node/commit/bc099fcaff59fee9c8a8f8e07ffff5b3c5df2bb9 github.com: https://github.com/sch8ill/CVE-2026-31309