CVE-2026-39320

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Source
https://cve.org/CVERecord?id=CVE-2026-39320
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39320.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-39320
Aliases
Published
2026-04-21T00:07:10Z
Modified
2026-08-12T03:51:08Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Signal K Server has an Unauthenticated Regular Expression Denial of Service (ReDoS) via WebSocket Subscription Paths
Details

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 logic. By injecting unescaped regex metacharacters into the context parameter of a stream subscription, an attacker can force the server's Node.js event loop into a catastrophic backtracking loop when evaluating long string identifiers (like the server's self UUID). This results in a total Denial of Service (DoS) where the server CPU spikes to 100% and becomes completely unresponsive to further API or socket requests. Version 2.25.0 contains a fix.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1333",
        "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39320.json"
}
References

Affected packages

Git / github.com/signalk/signalk-server

Affected ranges

Type
GIT
Repo
https://github.com/signalk/signalk-server
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9fec95f4386404cd311c9a445065513871ad9aa8
Fixed
215d81eb700d5419c3396a0fbf23f2e246dfac2d
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:signalk:signal_k_server:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.25.0"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.1.1
0.1.10
0.1.11
0.1.12
0.1.19
0.1.2
0.1.3
0.1.4
0.1.5
0.1.6
0.1.7
0.1.8
0.1.9
Other
latest
v0.*
v0.1.24
v0.1.26
v0.1.27
v0.1.28
v0.1.29
v0.1.30
v0.1.33
v1.*
v1.0.0
v1.0.0-0
v1.0.0-1
v1.0.0-2
v1.0.0-3
v1.0.0-4
v1.1.0
v1.1.1
v1.1.2
v1.10.0
v1.10.1
v1.10.2
v1.12.0
v1.13.0
v1.13.1
v1.14.0
v1.15.0
v1.16.0
v1.17.0
v1.18.0
v1.19.0
v1.19.0-beta.2
v1.2.0
v1.2.1
v1.2.2
v1.2.3
v1.2.4
v1.20.0
v1.21.0
v1.22.0
v1.23.0
v1.24.0
v1.25.0
v1.26.0
v1.27.0
v1.27.1
v1.28.0
v1.29.0
v1.3.0
v1.30.0
v1.31.0
v1.32.0
v1.32.0-beta.1
v1.32.0-beta.2
v1.32.0-beta.3
v1.33.0
v1.33.0-beta.1
v1.34.0
v1.35.0
v1.35.1
v1.35.2
v1.36.0
v1.36.0-beta.1
v1.36.0-beta.2
v1.36.0-beta.3
v1.37.0
v1.37.0-beta.1
v1.37.0-beta.3
v1.37.1
v1.37.2
v1.37.3
v1.37.4
v1.37.5
v1.37.6
v1.38.0
v1.38.1
v1.39.0
v1.4.0
v1.4.1
v1.4.2
v1.4.3
v1.40.0
v1.41.0
v1.41.0-beta.1
v1.41.0-beta.2
v1.41.0-beta.3
v1.41.0-beta.4
v1.41.1
v1.41.2
v1.41.3
v1.42.0
v1.43.0
v1.44.0
v1.45.0
v1.46.0
v1.46.1
v1.46.2
v1.46.3
v1.5.0
v1.6.0
v1.7.0
v1.7.1
v1.8.0
v1.9.0
v1.9.1
v2.*
v2.0.0
v2.0.0-beta.10
v2.0.0-beta.11
v2.0.0-beta.12
v2.0.0-beta.2
v2.0.0-beta.3
v2.0.0-beta.4
v2.0.0-beta.5
v2.0.0-beta.6
v2.0.0-beta.7
v2.0.0-beta.8
v2.0.0-beta.9
v2.1.0
v2.1.1
v2.10.0
v2.11.0
v2.12.0
v2.13.0
v2.13.0-beta.0
v2.13.0-beta.1
v2.13.0-beta.2
v2.13.0-beta.3
v2.13.1
v2.13.2
v2.13.3
v2.13.4
v2.13.5
v2.14.0
v2.14.0-beta.0
v2.14.0-beta.1
v2.14.1
v2.14.2
v2.14.3
v2.14.4
v2.15.0
v2.15.0-beta.5
v2.15.0-beta.6
v2.15.1
v2.15.2
v2.15.3
v2.16.0
v2.17.0
v2.17.1
v2.17.2
v2.18.0
v2.19.0
v2.19.0-beta.1
v2.19.0-beta.2
v2.19.0-beta.3
v2.19.0-beta.4
v2.19.0-beta.5
v2.19.1
v2.2.0
v2.20.0
v2.20.0-beta.1
v2.20.1
v2.20.2
v2.20.3
v2.21.1
v2.21.3
v2.22.0
v2.22.1
v2.23.0
v2.23.0-beta.1
v2.23.0-beta.2
v2.24.0
v2.24.0-beta.1
v2.24.0-beta.2
v2.24.0-beta.3
v2.24.0-beta.4
v2.3.0
v2.3.1
v2.4.1
v2.5.0
v2.6.0
v2.6.1
v2.6.2
v2.7.0
v2.7.1
v2.7.2
v2.8.0
v2.8.1
v2.8.2
v2.8.3
v2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39320.json"