{"cve":"CVE-2026-35342","nvd":{"published":"2026-04-22T17:16:36.217","modified":"2026-10-26T22:10:00.163","status":"Analyzed","description":"The mktemp utility in uutils coreutils fails to properly handle an empty TMPDIR environment variable. Unlike GNU mktemp, which falls back to /tmp when TMPDIR is an empty string, the uutils implementation treats the empty string as a valid path. This causes temporary files to be created in the current working directory (CWD) instead of the intended secure temporary directory. If the CWD is more permissive or accessible to other users than /tmp, it may lead to unintended information disclosure or unauthorized access to temporary data.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":3.3},"cwes":["CWE-377"],"references":["https://github.com/uutils/coreutils/pull/10566","https://github.com/uutils/coreutils/releases/tag/0.6.0"],"products":["uutils:coreutils"],"source":"nvd","synced_at":"2026-10-26T22:26:44.656832877+00:00"},"epss":{"cve":"CVE-2026-35342","score":0.00133,"percentile":0.02785,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-2w8r-9xj7-69j5","url":"https://osv.dev/vulnerability/GHSA-2w8r-9xj7-69j5","summary":"mktemp: empty TMPDIR creates temp files in CWD instead of /tmp","modified":"2026-07-06T20:11:14.809889Z","packages":[{"ecosystem":"crates.io","name":"uu_mktemp","purl":"pkg:cargo/uu_mktemp","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."]}