CVE-2026-118690
Signal K Server before 2.33.0 Missing Authentication via /skServer/ziplogs
- State
- Published
- Severity
- 9.3 Critical
- Published
- Oct 28, 2026
- Updated
- Oct 29, 2026
- Reserved
- Oct 28, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-306 Missing Authentication for Critical Function
Affected Products
| Product | Versions |
|---|---|
signalk-serverSignalK |
|
References
- Patch Commitpatch
- https://github.com/SignalK/signalk-serverproduct
- GitHub Security Advisory (GHSA-4w32-qx5g-cpwv)vendor-advisory
- https://github.com/SignalK/signalk-server/blob/v2.32.0/src/interfaces/logfiles.js#L30-L91technical-description
- signalk-server v2.33.0 Release Notesrelease-notes
- VulnCheck Advisory: Signal K Server before 2.33.0 Missing Authentication via /skServer/ziplogsthird-party-advisory
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