{"cve":"CVE-2019-13173","nvd":{"published":"2019-07-02T20:15:11.823","modified":"2026-06-17T02:16:13.180","status":"Modified","description":"fstream before 1.0.12 is vulnerable to Arbitrary File Overwrite. Extracting tarballs containing a hardlink to a file that already exists in the system, and a file that matches the hardlink, will overwrite the system's file with the contents of the extracted file. The fstream.DirWriter() function is vulnerable.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-59"],"references":["http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00010.html","http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00052.html","https://github.com/npm/fstream/commit/6a77d2fa6e1462693cf8e46f930da96ec1b0bb22","https://usn.ubuntu.com/4123-1/","https://www.npmjs.com/advisories/886"],"products":["fstream_project:fstream"],"source":"nvd","synced_at":"2026-10-19T20:57:00.690689396+00:00"},"epss":{"cve":"CVE-2019-13173","score":0.02416,"percentile":0.8415,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-xf7w-r453-m56c","url":"https://osv.dev/vulnerability/GHSA-xf7w-r453-m56c","summary":"Arbitrary File Overwrite in fstream","modified":"2023-11-08T04:01:07.720925Z","packages":[{"ecosystem":"npm","name":"fstream","purl":"pkg:npm/fstream","ranges":["<1.0.12"],"fixed":["1.0.12"]}]}],"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."]}