{"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-2026-39320 exists.","fix":"Upgrade signalk-server to 2.25.0 or later.","what":"CVE-2026-39320 is a high-severity denial of service vulnerability in signalk-server, published on 21 Apr 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-2026-39320 and fix it if it is affected.\n\nWhat it is: CVE-2026-39320 is a high-severity denial of service vulnerability in signalk-server, published on 21 Apr 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-2026-39320 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-2026-39320/ (Markdown: https://insights.sbomify.com/CVE-2026-39320/index.md)","id":"CVE-2026-39320","markdown":"https://insights.sbomify.com/CVE-2026-39320/index.md","name":"CVE-2026-39320","record":{"aliases":["GHSA-7gcj-phff-2884"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Marine data server","requires_auth":"none","summary":"Unauthenticated attackers can cause a total Denial of Service in Signal K Server by injecting regex metacharacters into WebSocket subscription paths.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"signal_k_server","vendor":"signalk"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"},{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"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.","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 has an Unauthenticated Regular Expression Denial of Service (ReDoS) via WebSocket Subscription Paths","id":"CVE-2026-39320","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"Parse Server has a login timing side-channel reveals user existence","id":"CVE-2026-39321"},"packages":[{"ecosystem":"npm","fixed":["2.25.0"],"introduced":["0"],"last_affected":[],"package":"signalk-server","purl":null,"source":"GHSA-7gcj-phff-2884"},{"ecosystem":"npm","fixed":["2.25.0"],"introduced":["0"],"last_affected":[],"package":"signalk-server","purl":"pkg:npm/signalk-server","source":"GHSA-7gcj-phff-2884"}],"prev":{"headline":"ChurchCRM has a Second Order SQLI via FundRaiserEditor.php","id":"CVE-2026-39319"},"products":["signalk-server"],"published":"2026-04-21","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":8.7,"headline":"Signal K Server's WebSocket Login Endpoint Lacks Rate Limiting (Credential Brute-Force)","id":"CVE-2026-41893","kev_date_added":null,"published":"2026-05-09"},{"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":"2026-04-21","vendors":["SignalK"]},"summary":"Unauthenticated attackers can cause a total Denial of Service in Signal K Server by injecting regex metacharacters into WebSocket subscription paths.","url":"https://insights.sbomify.com/CVE-2026-39320/"}