CVE-2026-31309

critical · 9.8

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.

9.8

CVSS

0.6%

EPSS (exploit prob.)

48th

EPSS percentile

2026-07-08

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-862

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-31309