{"cve":"CVE-2026-35355","nvd":{"published":"2026-04-22T17:16:37.993","modified":"2026-10-26T21:10:00.170","status":"Analyzed","description":"The install utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file installation. The implementation unlinks an existing destination file and then recreates it using a path-based operation without the O_EXCL flag. A local attacker can exploit the window between the unlink and the subsequent creation to swap the path with a symbolic link, allowing them to redirect privileged writes to overwrite arbitrary system files.","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:H/A:H","score":6.3},"cwes":["CWE-367"],"references":["https://github.com/uutils/coreutils/pull/10067","https://github.com/uutils/coreutils/releases/tag/0.6.0","https://github.com/uutils/coreutils/pull/10067"],"products":["uutils:coreutils"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-35355","score":0.00118,"percentile":0.01697,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-239g-2685-54x3","url":"https://osv.dev/vulnerability/GHSA-239g-2685-54x3","summary":"install: TOCTOU symlink race (unlink-then-create without O_EXCL) allows arbitrary file overwrite","modified":"2026-07-06T20:11:15.725230Z","packages":[{"ecosystem":"crates.io","name":"uu_install","purl":"pkg:cargo/uu_install","ranges":["<0.6.0"],"fixed":["0.6.0"]}]}],"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."]}