CVE-2026-118690

CVSS 9.8 (critical) · published 2026-10-28

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.

Weakness: CWE-306

Source: NVD CVE-2026-118690

References

• 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

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