CVE-2026-118690: critical vulnerability in signalk-server
Signal K Server before 2.33.0 Missing Authentication via /skServer/ziplogs
Published
25Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3
exploitation probability
—
observed exploitation
nono source reports it
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
SignalK · signalk-serverRelated CVEs — signalk-server
In the same product, most dangerous first.
CVE-2025-66398CRITICALSignal K Server has Unauthenticated State Pollution leading to Remote Code Execution (RCE)EPSS 19.9%CVE-2026-23515CRITICALRCE - Command Injection in Signal K set-system-time pluginEPSS 4.6%CVE-2025-68273MEDIUMSignal K Server Vulnerable to Unauthenticated Information Disclosure via Exposed EndpointsEPSS 0.8%CVE-2025-68619HIGHSignal K Server Vulnerable to Remote Code Execution via Malicious npm PackageEPSS 0.7%CVE-2025-68272HIGHSignal K Server Vulnerable to Denial of Service via Unrestricted Access Request FloodingEPSS 0.6%CVE-2025-68620CRITICALSignal K Server vulnerable to JWT Token Theft via WebSocket Enumeration and Unauthenticated PollingEPSS 0.5%
References
https://github.com/SignalK/signalk-serverhttps://github.com/SignalK/signalk-server/blob/v2.32.0/src/interfaces/logfiles.js#L30-L91https://github.com/SignalK/signalk-server/commit/728bab82742d16c54e50525b95dc9b6e32396107https://github.com/SignalK/signalk-server/releases/tag/v2.33.0https://github.com/SignalK/signalk-server/security/advisories/GHSA-4w32-qx5g-cpwvhttps://www.vulncheck.com/advisories/signal-k-server-before-2.33.0-missing-authentication-via-skserver-ziplogs