{"id":"CVE-2020-37288","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-37288","generatedAt":"2026-10-27T23:29:53.784Z","title":"Affected contracts revert such calls unnecessarily, which in limited circumstances could enable denial of service against public contracts.","description":"Vyper from 0.1.0b10 before 0.2.3 generates incorrect code for a return statement inside a for loop in an internal function called two or more internal calls deep, producing an invalid jump destination (stack underflow). Affected contracts revert such calls unnecessarily, which in limited circumstances could enable denial of service against public contracts.","published":"2026-10-21T01:17:19.000Z","lastModified":"2026-10-22T17:39:57.000Z","status":"Awaiting Analysis","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":6.3,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/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-670"],"affected":[],"epss":{"score":0.00347,"percentile":0.28045,"date":"2026-10-26","history":[{"date":"2026-10-21","score":0.00284,"percentile":0.19785}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.35%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-21T01:17:19.000Z","detail":{"score":"6.3","severity":"MEDIUM","publishedAt":"2026-10-21T01:17:18.683Z"},"summary":"New CVE, medium severity (CVSS 6.3)."}],"references":[{"url":"https://github.com/vyperlang/vyper/security/advisories/GHSA-vg88-3v92-rjx2","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/vyper-0.1-0b10-before-0.2.3-invalid-jump-destination-via-return-in-nested-loops","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-37288","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."}