CVE-2026-31309

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

https://github.com/sch8ill/CVE-2026-31309

https://github.com/mysteriumnetwork/node/releases/tag/1.36.0

https://github.com/mysteriumnetwork/node/releases/tag/1.35.5

https://github.com/mysteriumnetwork/node/commit/bc099fcaff59fee9c8a8f8e07ffff5b3c5df2bb9

https://github.com/mysteriumnetwork/node/commit/83051199cd641dd4ed9057b958e5616df1309f19

https://github.com/mysteriumnetwork/node/blob/1.35.5/tequilapi/tequil/routes.go#L26

https://github.com/mysteriumnetwork/node/

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3