CVE-2026-41893

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-41893", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-22T15:11:54.671Z", "datePublished": "2026-05-09T19:12:10.082Z", "dateUpdated": "2026-05-14T17:50:55.289Z"}, "containers": {"cna": {"title": "Signal K Server's WebSocket Login Endpoint Lacks Rate Limiting (Credential Brute-Force)", "problemTypes": [{"descriptions": [{"cweId": "CWE-307", "lang": "en", "description": "CWE-307: Improper Restriction of Excessive Authentication Attempts", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "vectorString": "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", "version": "4.0"}}], "references": [{"name": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-vmfm-ch9h-5c7g", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-vmfm-ch9h-5c7g"}, {"name": "https://github.com/SignalK/signalk-server/pull/2568", "tags": ["x_refsource_MISC"], "url": "https://github.com/SignalK/signalk-server/pull/2568"}, {"name": "https://github.com/SignalK/signalk-server/commit/215d81eb700d5419c3396a0fbf23f2e246dfac2d", "tags": ["x_refsource_MISC"], "url": "https://github.com/SignalK/signalk-server/commit/215d81eb700d5419c3396a0fbf23f2e246dfac2d"}, {"name": "https://github.com/SignalK/signalk-server/releases/tag/v2.25.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/SignalK/signalk-server/releases/tag/v2.25.0"}], "affected": [{"vendor": "SignalK", "product": "signalk-server", "versions": [{"version": "< 2.25.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-09T19:12:10.082Z"}, "descriptions": [{"lang": "en", "value": "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 HTTP_RATE_LIMITS). The WebSocket login path \u2014 sending {login: {username, password}} messages over an established WebSocket connection \u2014 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."}], "source": {"advisory": "GHSA-vmfm-ch9h-5c7g", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-vmfm-ch9h-5c7g", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-14T17:50:07.187900Z", "id": "CVE-2026-41893", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-14T17:50:55.289Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-41893", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-14T17:50:07.187900Z"}}}], "references": [{"url": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-vmfm-ch9h-5c7g", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-14T17:48:58.670Z"}}], "cna": {"title": "Signal K Server's WebSocket Login Endpoint Lacks Rate Limiting (Credential Brute-Force)", "source": {"advisory": "GHSA-vmfm-ch9h-5c7g", "discovery": "UNKNOWN"}, "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 8.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "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", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE"}}], "affected": [{"vendor": "SignalK", "product": "signalk-server", "versions": [{"status": "affected", "version": "< 2.25.0"}]}], "references": [{"url": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-vmfm-ch9h-5c7g", "name": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-vmfm-ch9h-5c7g", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/SignalK/signalk-server/pull/2568", "name": "https://github.com/SignalK/signalk-server/pull/2568", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/SignalK/signalk-server/commit/215d81eb700d5419c3396a0fbf23f2e246dfac2d", "name": "https://github.com/SignalK/signalk-server/commit/215d81eb700d5419c3396a0fbf23f2e246dfac2d", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/SignalK/signalk-server/releases/tag/v2.25.0", "name": "https://github.com/SignalK/signalk-server/releases/tag/v2.25.0", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "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 HTTP_RATE_LIMITS). The WebSocket login path \u2014 sending {login: {username, password}} messages over an established WebSocket connection \u2014 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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-307", "description": "CWE-307: Improper Restriction of Excessive Authentication Attempts"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-09T19:12:10.082Z"}}}, "cveMetadata": {"cveId": "CVE-2026-41893", "state": "PUBLISHED", "dateUpdated": "2026-05-14T17:50:55.289Z", "dateReserved": "2026-04-22T15:11:54.671Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-05-09T19:12:10.082Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "signalk-server", "vendor": "SignalK", "versions": [{"status": "affected", "version": "< 2.25.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:signalk:signal_k_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "2DAD2E1E-F9F3-40FA-B483-3AB2A3093CFB", "versionEndExcluding": "2.25.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 HTTP_RATE_LIMITS). The WebSocket login path \u2014 sending {login: {username, password}} messages over an established WebSocket connection \u2014 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."}, {"lang": "es", "value": "Signal K Server es una aplicaci\u00f3n de servidor que se ejecuta en un concentrador central en una embarcaci\u00f3n. Antes de la versi\u00f3n 2.25.0, los puntos finales de inicio de sesi\u00f3n HTTP (POST /login y POST /signalk/v1/auth/login) est\u00e1n protegidos por express-rate-limit (predeterminado: 100 intentos por ventana de 10 minutos, configurable a trav\u00e9s de HTTP_RATE_LIMITS). La ruta de inicio de sesi\u00f3n de WebSocket - enviando mensajes {login: {username, password}} a trav\u00e9s de una conexi\u00f3n WebSocket establecida - llama directamente a app.securityStrategy.login() sin ninguna limitaci\u00f3n de velocidad. Un atacante puede eludir completamente la limitaci\u00f3n de velocidad HTTP abriendo una conexi\u00f3n WebSocket e intentando un n\u00famero ilimitado de conjeturas de contrase\u00f1a a la velocidad que permite bcrypt (~20 intentos/seg con 10 rondas de sal). Este problema ha sido parcheado en la versi\u00f3n 2.25.0."}], "id": "CVE-2026-41893", "lastModified": "2026-07-24T19:10:00.160", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-41893", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-14T17:50:07.187900Z", "version": "2.0.3"}}]}, "published": "2026-05-09T20:16:27.273", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/SignalK/signalk-server/commit/215d81eb700d5419c3396a0fbf23f2e246dfac2d"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking", "Patch"], "url": "https://github.com/SignalK/signalk-server/pull/2568"}, {"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/SignalK/signalk-server/releases/tag/v2.25.0"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-vmfm-ch9h-5c7g"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/SignalK/signalk-server/security/advisories/GHSA-vmfm-ch9h-5c7g"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-307"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.25.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "signalk-server", "source": "cna", "vendor": "SignalK"}, "product": "signalk-server", "vendor": "signalk"}], "created": "2026-05-09T20:30:40.835528+00:00", "updated": "2026-05-09T20:30:41.065950+00:00", "vendors": ["signalk", "signalk$PRODUCT$signalk-server"]}