Vulnerability details
CVE-2026-118690
SignalK signalk-server
Signal K Server before 2.33.0 Missing Authentication via /skServer/ziplogs
CVSS 4.0
9.3Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.3Critical | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | 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 |
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| SignalK | signalk-server | v < 2.33.0 | CVEProject cvelistV5 (CNA) |
References and advisories
6- https://github.com/SignalK/signalk-server/commit/728bab82742d16c54e50525b95dc9b6e32396107 patch
- https://github.com/SignalK/signalk-server product
- https://github.com/SignalK/signalk-server/security/advisories/GHSA-4w32-qx5g-cpwv vendor-advisory
- https://github.com/SignalK/signalk-server/blob/v2.32.0/src/interfaces/logfiles.js#L30-L91 technical-description
- https://github.com/SignalK/signalk-server/releases/tag/v2.33.0 release-notes
- https://www.vulncheck.com/advisories/signal-k-server-before-2.33.0-missing-authentication-via-skserver-ziplogs third-party-advisory
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Details
- Published
- 2026-10-29
- Last updated
- 2026-10-29
- State
- Published
- Assigner (CNA)
- VulnCheck
- Kolun priority
- 27 · Low
Exploit prediction (EPSS)
0.68%
Probability of exploitation in 30 days
52.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-306Missing Authentication for Critical Function