{"id":"CVE-2020-7774","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-7774","generatedAt":"2026-11-05T01:53:54.124Z","title":"The package y18n before 3.2.2, 4.0.1 and 5.0.5, is vulnerable to Prototype Pollution.","description":"The package y18n before 3.2.2, 4.0.1 and 5.0.5, is vulnerable to Prototype Pollution.","published":"2020-11-17T13:15:13.000Z","lastModified":"2026-06-17T03:25:25.000Z","status":"Modified","sourceIdentifier":"report@snyk.io","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-1321"],"affected":["y18n project/y18n","oracle/graalvm","siemens/sinec infrastructure network services"],"epss":{"score":0.69589,"percentile":0.99366,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 69.6%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf","tags":["Patch","Third Party Advisory"],"source":"report@snyk.io"},{"url":"https://github.com/yargs/y18n/issues/96","tags":["Exploit","Third Party Advisory"],"source":"report@snyk.io"},{"url":"https://github.com/yargs/y18n/pull/108","tags":["Patch","Third Party Advisory"],"source":"report@snyk.io"},{"url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038306","tags":["Exploit","Third Party Advisory"],"source":"report@snyk.io"},{"url":"https://snyk.io/vuln/SNYK-JS-Y18N-1021887","tags":["Exploit","Third Party Advisory"],"source":"report@snyk.io"},{"url":"https://www.oracle.com/security-alerts/cpuApr2021.html","tags":["Patch","Third Party Advisory"],"source":"report@snyk.io"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/yargs/y18n/issues/96","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/yargs/y18n/pull/108","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038306","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://snyk.io/vuln/SNYK-JS-Y18N-1021887","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuApr2021.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-7774","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."}