{"cve":"CVE-2017-20162","nvd":{"published":"2023-01-05T12:15:09.167","modified":"2026-10-15T16:17:27.437","status":"Modified","description":"A vulnerability, which was classified as problematic, has been found in vercel ms up to 1.x. This issue affects the function parse of the file index.js. The manipulation of the argument str leads to inefficient regular expression complexity. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2.0.0 is able to address this issue. The patch is named caae2988ba2a37765d055c4eee63d383320ee662. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-217451.","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:N/A:L","score":5.3},"cwes":["CWE-1333"],"references":["https://github.com/vercel/ms/commit/caae2988ba2a37765d055c4eee63d383320ee662","https://github.com/vercel/ms/pull/89","https://github.com/vercel/ms/releases/tag/2.0.0","https://vuldb.com/?ctiid.217451","https://vuldb.com/?id.217451"],"products":["vercel:ms"],"source":"nvd","synced_at":"2026-10-19T21:37:34.931465858+00:00"},"epss":{"cve":"CVE-2017-20162","score":0.01018,"percentile":0.63094,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-w9mr-4mfr-499f","url":"https://osv.dev/vulnerability/GHSA-w9mr-4mfr-499f","summary":"Vercel ms Inefficient Regular Expression Complexity vulnerability","modified":"2025-11-04T16:42:14Z","packages":[{"ecosystem":"npm","name":"ms","purl":"pkg:npm/ms","ranges":["<2.0.0"],"fixed":["2.0.0"]}]}],"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."]}