CVE-2026-118690

Signal K Server before 2.33.0 contains a missing authentication vulnerability that allows unauthenticated remote attackers to download log archives via the /skServer/ziplogs endpoint. Attackers can extract the JWT secretKey from security.json in the ZIP, forge administrator tokens, and create persistent admin accounts for full server control.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/SignalK/signalk-server
https://github.com/SignalK/signalk-server/blob/v2.32.0/src/interfaces/logfiles.js#L30-L91
https://github.com/SignalK/signalk-server/commit/728bab82742d16c54e50525b95dc9b6e32396107
https://github.com/SignalK/signalk-server/releases/tag/v2.33.0
https://github.com/SignalK/signalk-server/security/advisories/GHSA-4w32-qx5g-cpwv
https://www.vulncheck.com/advisories/signal-k-server-before-2.33.0-missing-authentication-via-skserver-ziplogs

Configurations

No configuration.

History

28 Oct 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-28 22:17

Updated : 2026-10-29 18:17

NVD link : CVE-2026-118690

Mitre link : CVE-2026-118690

CVE.ORG link : CVE-2026-118690

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

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