CVE-2026-41893

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Source
https://cve.org/CVERecord?id=CVE-2026-41893
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41893.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-41893
Aliases
Published
2026-05-09T19:12:10.082Z
Modified
2026-07-15T01:49:15.676051643Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Signal K Server's WebSocket Login Endpoint Lacks Rate Limiting (Credential Brute-Force)
Details

Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.25.0, the HTTP login endpoints (POST /login and POST /signalk/v1/auth/login) are protected by express-rate-limit (default: 100 attempts per 10-minute window, configurable via HTTPRATELIMITS). The WebSocket login path — sending {login: {username, password}} messages over an established WebSocket connection — calls app.securityStrategy.login() directly without any rate limiting. An attacker can bypass HTTP rate limiting entirely by opening a WebSocket connection and attempting unlimited password guesses at the speed bcrypt allows (~20 attempts/sec with 10 salt rounds). This issue has been patched in version 2.25.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41893.json",
    "cwe_ids": [
        "CWE-307"
    ]
}
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 
{
    "cpe": "cpe:2.3:a:signalk:signal_k_server:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.25.0"
        }
    ]
}

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-2026-41893.json"