{"cve":"CVE-2021-28966","nvd":{"published":"2021-07-30T14:15:16.303","modified":"2026-06-17T03:47:06.010","status":"Modified","description":"In Ruby through 3.0 on Windows, a remote attacker can submit a crafted path when a Web application handles a parameter with TmpDir.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-22"],"references":["https://hackerone.com/reports/1131465","https://security.netapp.com/advisory/ntap-20210902-0004/","https://hackerone.com/reports/1131465","https://security.netapp.com/advisory/ntap-20210902-0004/"],"products":["ruby-lang:ruby"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-28966","score":0.58039,"percentile":0.99089,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-46f2-3v63-3xrp","url":"https://osv.dev/vulnerability/GHSA-46f2-3v63-3xrp","summary":"Tempfile on Windows path traversal vulnerability","modified":"2025-01-27T08:58:38.818172Z","packages":[{"ecosystem":"RubyGems","name":"tmpdir","purl":"pkg:gem/tmpdir","ranges":["<0.1.2"],"fixed":["0.1.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}