{"cve":"CVE-2017-18869","nvd":{"published":"2020-06-15T15:15:09.317","modified":"2026-06-17T01:13:43.760","status":"Modified","description":"A TOCTOU issue in the chownr package before 1.1.0 for Node.js 10.10 could allow a local attacker to trick it into descending into unintended directories via symlink attacks.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","score":2.5},"cwes":["CWE-367"],"references":["https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863985","https://bugzilla.redhat.com/show_bug.cgi?id=1611614","https://github.com/isaacs/chownr/issues/14","https://snyk.io/vuln/npm:chownr:20180731","https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863985"],"products":["chownr_project:chownr"],"source":"nvd","synced_at":"2026-10-19T21:05:42.039641217+00:00"},"epss":{"cve":"CVE-2017-18869","score":0.00334,"percentile":0.26746,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-c6rq-rjc2-86v2","url":"https://osv.dev/vulnerability/GHSA-c6rq-rjc2-86v2","summary":"Time-of-check Time-of-use (TOCTOU) Race Condition in chownr","modified":"2023-11-08T03:59:16.650985Z","packages":[{"ecosystem":"npm","name":"chownr","purl":"pkg:npm/chownr","ranges":["<1.1.0"],"fixed":["1.1.0"]}]}],"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."]}