GHSA-PMFC-4WJJ-GMHX

Vulnerability from github – Published: 2026-07-06 21:54 – Updated: 2026-07-06 21:54
VLAI
Summary
cut: -s ignored in -z -d '' newline-delimiter mode
Details

cut routes -z -d '' through a special newline-delimiter path that ignores the -s only-delimited flag, emitting whole undelimited records (plus NUL) that should be suppressed. Pipelines relying on cut -s to drop undelimited records process data that should be filtered.

printf 'abc' | cut -z -d '' -s -f 1 | od -An -tx1   # GNU: no output ; uutils: 61 62 63 00

Zellic private finding (zellic-ext/coreutils-private PR #102). Reported in the Zellic uutils coreutils Program Security Assessment (for Canonical, Jan 2026), audited commit 3a07ffc5a9bd4c283e75afa548ba1f1957bad242.

Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "uu_cut"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-35381"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-684"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-06T21:54:29Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "`cut` routes `-z -d \u0027\u0027` through a special newline-delimiter path that ignores the `-s` only-delimited flag, emitting whole undelimited records (plus NUL) that should be suppressed. Pipelines relying on `cut -s` to drop undelimited records process data that should be filtered.\n```\nprintf \u0027abc\u0027 | cut -z -d \u0027\u0027 -s -f 1 | od -An -tx1   # GNU: no output ; uutils: 61 62 63 00\n```\n\n---\n_Zellic private finding (zellic-ext/coreutils-private PR #102). Reported in the Zellic *uutils coreutils Program Security Assessment* (for Canonical, Jan 2026), audited commit `3a07ffc5a9bd4c283e75afa548ba1f1957bad242`._",
  "id": "GHSA-pmfc-4wjj-gmhx",
  "modified": "2026-07-06T21:54:29Z",
  "published": "2026-07-06T21:54:29Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/uutils/coreutils/security/advisories/GHSA-pmfc-4wjj-gmhx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35381"
    },
    {
      "type": "WEB",
      "url": "https://github.com/uutils/coreutils/pull/11394"
    },
    {
      "type": "WEB",
      "url": "https://github.com/uutils/coreutils/commit/483f13e91830c468262aa1e010e753d6ae99c898"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/uutils/coreutils"
    },
    {
      "type": "WEB",
      "url": "https://github.com/uutils/coreutils/releases/tag/0.8.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "cut: -s ignored in -z -d \u0027\u0027 newline-delimiter mode"
}



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