{
"id": "GHSA-jcjr-rh8q-7xqf",
"aliases": [
"CVE-2026-35373"
],
"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`._",
"summary": "ln: rejects non-UTF-8 source filenames in target-directory mode",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.6.0"
}
]
}
],
"package": {
"name": "uu_ln",
"ecosystem": "crates.io"
}
}
],
"modified": "2026-07-06T19:53:39Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
}
],
"published": "2026-07-06T19:53:39Z",
"references": [
{
"url": "https://github.com/uutils/coreutils/security/advisories/GHSA-jcjr-rh8q-7xqf",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35373",
"type": "ADVISORY"
},
{
"url": "https://github.com/uutils/coreutils/pull/11403",
"type": "WEB"
},
{
"url": "https://github.com/uutils/coreutils",
"type": "PACKAGE"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-176"
],
"severity": "LOW",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2026-07-06T19:53:39Z"
}
}