{"id":"CVE-2026-102992","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102992","generatedAt":"2026-10-28T01:52:38.484Z","title":"An inherited execArgv value is passed to the Node.js Worker constructor and can preload attacker-controlled code in worker threads, an inherited loadBalancer function can execute during task scheduling, and inherited env values can alter worker…","description":"piscina is a node.js worker pool implementation. Prior to 4.9.4, 5.3.2, and 6.0.0-rc.5, Piscina stores ThreadPool.options in src/index.ts as a plain object that inherits from Object.prototype. Applications with a separate prototype-pollution primitive can therefore supply inherited values for security-sensitive options that do not have own defaults. An inherited execArgv value is passed to the Node.js Worker constructor and can preload attacker-controlled code in worker threads, an inherited loadBalancer function can execute during task scheduling, and inherited env values can alter worker environments. This issue is fixed in versions 4.9.4, 5.3.2, and 6.0.0-rc.5.","published":"2026-09-30T20:17:27.000Z","lastModified":"2026-09-30T21:17:06.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":9.2,"severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/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/M"},"cwe":["CWE-1321"],"affected":[],"epss":{"score":0.00512,"percentile":0.43403,"date":"2026-10-26","history":[{"date":"2026-10-01","score":0.00552,"percentile":0.4407}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-30T20:17:27.000Z","detail":{"score":"9.2","severity":"CRITICAL","publishedAt":"2026-09-30T20:17:27.080Z"},"summary":"New CVE, critical severity (CVSS 9.2)."}],"references":[{"url":"https://github.com/piscinajs/piscina/commit/0cb12fca37f526065b072592afe954574dcc656f","source":"security-advisories@github.com"},{"url":"https://github.com/piscinajs/piscina/commit/2f69f67159a0e48b38fd61fa4a91c2fdc19fff72","source":"security-advisories@github.com"},{"url":"https://github.com/piscinajs/piscina/commit/5be7bbb19e3787bb698862cd516121a578d690f7","source":"security-advisories@github.com"},{"url":"https://github.com/piscinajs/piscina/commit/bebbda255c2981cecddd36b171b94be2fd41c9a6","source":"security-advisories@github.com"},{"url":"https://github.com/piscinajs/piscina/releases/tag/v4.9.4","source":"security-advisories@github.com"},{"url":"https://github.com/piscinajs/piscina/releases/tag/v5.3.2","source":"security-advisories@github.com"},{"url":"https://github.com/piscinajs/piscina/releases/tag/v6.0.0-rc.5","source":"security-advisories@github.com"},{"url":"https://github.com/piscinajs/piscina/security/advisories/GHSA-67c8-pqhq-4rmx","source":"security-advisories@github.com"},{"url":"https://github.com/piscinajs/piscina/security/advisories/GHSA-67c8-pqhq-4rmx","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102992","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}