Resource exhaustion in Signalk Signalk-server
CVE-2026-39320
Signal K Server is a server application that runs on a central hub in a boat. Versions prior to 2.25.0 are vulnerable to an unauthenticated Regular Expression Denial of Service (ReDoS) attack within the WebSocket subscription handling logi…
Vulnerability class: DoS (Denial of Service)
EPSS: 0.001 (22.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Signalk Signalk-server — versions < 2.25.0
Weakness classification (CWE)
References
- https://github.com/SignalK/signalk-server/security/advisories/GHSA-7gcj-phff-2884 (x_refsource_CONFIRM)
- https://github.com/SignalK/signalk-server/pull/2568 (x_refsource_MISC)
- https://github.com/SignalK/signalk-server/commit/215d81eb700d5419c3396a0fbf23f2e246dfac2d (x_refsource_MISC)
- https://github.com/SignalK/signalk-server/releases/tag/v2.25.0 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-39320?
- CVE-2026-39320 is a high-severity vulnerability in Signalk Signalk-server, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-04-21.
- How severe is CVE-2026-39320?
- High severity. CVSS v3 base score is 7.5 out of 10.