{"id":"CVE-2026-35373","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-35373","summary":"ln: rejects non-UTF-8 source filenames in target-directory mode","details":"In target-directory forms (`ln SOURCE... DIRECTORY`), `ln` rejects source paths with non-UTF-8 filename bytes, while GNU accepts them. Breaks GNU compatibility for byte-oriented filenames on Unix filesystems.\n\nPoC:\n```\nname=$(printf 'bad_\\377'); mkdir dst; : > \"$name\"; ln \"$name\" dst\n# GNU: exit 0, creates dst/bad_\\377 ; uutils: exit 1, dst empty\n```\n\n---\n_Zellic private finding (zellic-ext/coreutils-private PR #84). Reported in the Zellic *uutils coreutils Program Security Assessment* (for Canonical, Jan 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`._","published":"2026-07-06T19:53:39Z","modified":"2026-07-06T20:00:18.263514096Z","cvss":{"score":3.3,"severity":"LOW","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"crates.io","name":"uu_ln","fixedVersion":"0.6.0"}],"fix":{"url":"https://github.com/uutils/coreutils/pull/11403","label":"uutils/coreutils#11403"},"references":[{"type":"WEB","url":"https://github.com/uutils/coreutils/security/advisories/GHSA-jcjr-rh8q-7xqf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35373"},{"type":"WEB","url":"https://github.com/uutils/coreutils/pull/11403"},{"type":"PACKAGE","url":"https://github.com/uutils/coreutils"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-06T20:00:18.263514096Z"}}