{"answers":{"affected":"2 open source packages ship an affected version, including signalk-server. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41893 exists.","fix":"Upgrade signalk-server to 2.25.0 or later.","what":"CVE-2026-41893 is a high-severity vulnerability in signalk-server, published on 9 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-41893 and fix it if it is affected.\n\nWhat it is: CVE-2026-41893 is a high-severity vulnerability in signalk-server, published on 9 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41893 exists.\n\nAffected packages and fixed versions:\n- signalk-server (npm): affected all versions; fixed in 2.25.0\n- signalk-server (npm): affected all versions; fixed in 2.25.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-41893/ (Markdown: https://insights.sbomify.com/CVE-2026-41893/index.md)","id":"CVE-2026-41893","markdown":"https://insights.sbomify.com/CVE-2026-41893/index.md","name":"CVE-2026-41893","record":{"aliases":["GHSA-vmfm-ch9h-5c7g"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Marine server software","requires_auth":"none","summary":"Attackers can bypass HTTP rate limits via WebSocket to brute-force credentials, potentially taking over accounts on Signal K Server.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"signal_k_server","vendor":"signalk"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"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"},"cwes":[{"id":"CWE-307","name":"Improper Restriction of Excessive Authentication Attempts"}],"description":"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 — 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.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Signal K Server's WebSocket Login Endpoint Lacks Rate Limiting (Credential Brute-Force)","id":"CVE-2026-41893","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"SiYuan: Incomplete Fix Bypass for CVE-2026-30869: Path Traversal via Double URL Encoding in `/export/` Endpoint","id":"CVE-2026-41894"},"packages":[{"ecosystem":"npm","fixed":["2.25.0"],"introduced":["0"],"last_affected":[],"package":"signalk-server","purl":null,"source":"GHSA-vmfm-ch9h-5c7g"},{"ecosystem":"npm","fixed":["2.25.0"],"introduced":["0"],"last_affected":[],"package":"signalk-server","purl":"pkg:npm/signalk-server","source":"GHSA-vmfm-ch9h-5c7g"}],"prev":{"headline":"CI4MS: Deactivated User Session Bypass (active=0)","id":"CVE-2026-41891"},"products":["signalk-server"],"published":"2026-05-09","related":[{"cvss_score":10,"headline":"RCE - Command Injection in Signal K set-system-time plugin","id":"CVE-2026-23515","kev_date_added":null,"published":"2026-02-02"},{"cvss_score":9.7,"headline":"Signal K Server has Unauthenticated State Pollution leading to Remote Code Execution (RCE)","id":"CVE-2025-66398","kev_date_added":null,"published":"2026-01-01"},{"cvss_score":9.4,"headline":"signalk-server: Privilege Escalation by Admin Role Injection via /enableSecurity","id":"CVE-2026-33950","kev_date_added":null,"published":"2026-04-02"},{"cvss_score":9.1,"headline":"Signal K Server vulnerable to JWT Token Theft via WebSocket Enumeration and Unauthenticated Polling","id":"CVE-2025-68620","kev_date_added":null,"published":"2026-01-01"},{"cvss_score":7.5,"headline":"Signal K Server has an Unauthenticated Regular Expression Denial of Service (ReDoS) via WebSocket Subscription Paths","id":"CVE-2026-39320","kev_date_added":null,"published":"2026-04-21"},{"cvss_score":7.5,"headline":"Signal K Server Vulnerable to Denial of Service via Unrestricted Access Request Flooding","id":"CVE-2025-68272","kev_date_added":null,"published":"2026-01-01"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-14","vendors":["SignalK"]},"summary":"Attackers can bypass HTTP rate limits via WebSocket to brute-force credentials, potentially taking over accounts on Signal K Server.","url":"https://insights.sbomify.com/CVE-2026-41893/"}