CVE-2026-31309

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Summary

CVECVE-2026-31309
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-08 22:17:13 UTC
Updated2026-07-09 17:02:37 UTC
DescriptionImproper 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from ADP

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

Problem Types: CWE-862 | n/a | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
github.com/mysteriumnetwork/node/commit/83051199cd641dd4ed9057b958e5616d... [email protected] github.com
github.com/mysteriumnetwork/node/commit/bc099fcaff59fee9c8a8f8e07ffff5b3... [email protected] github.com
github.com/mysteriumnetwork/node/releases/tag/1.36.0 [email protected] github.com
github.com/mysteriumnetwork/node/releases/tag/1.35.5 [email protected] github.com
github.com/mysteriumnetwork/node/blob/1.35.5/tequilapi/tequil/routes.go [email protected] github.com
github.com/mysteriumnetwork/node [email protected] github.com
github.com/sch8ill/CVE-2026-31309 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
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