Vulnerability-Lookup

GHSA-X2WV-9P67-MH9W

Vulnerability from github – Published: 2026-04-22 18:31 – Updated: 2026-04-29 23:18

Summary

uutils coreutils doesn't properly handle setuid and setgid bits when ownership preservation fails

Details

The cp utility in uutils coreutils fails to properly handle setuid and setgid bits when ownership preservation fails. When copying with the -p (preserve) flag, the utility applies the source mode bits even if the chown operation is unsuccessful. This can result in a user-owned copy retaining original privileged bits, creating unexpected privileged executables that violate local security policies. This differs from GNU cp, which clears these bits when ownership cannot be preserved.

Severity

6.6 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "coreutils"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.8.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-35350"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-281"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-29T23:18:25Z",
    "nvd_published_at": "2026-04-22T17:16:37Z",
    "severity": "MODERATE"
  },
  "details": "The cp utility in uutils coreutils fails to properly handle setuid and setgid bits when ownership preservation fails. When copying with the -p (preserve) flag, the utility applies the source mode bits even if the chown operation is unsuccessful. This can result in a user-owned copy retaining original privileged bits, creating unexpected privileged executables that violate local security policies. This differs from GNU cp, which clears these bits when ownership cannot be preserved.",
  "id": "GHSA-x2wv-9p67-mh9w",
  "modified": "2026-04-29T23:18:25Z",
  "published": "2026-04-22T18:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35350"
    },
    {
      "type": "WEB",
      "url": "https://github.com/uutils/coreutils/issues/9750"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/uutils/coreutils"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "uutils coreutils doesn\u0027t properly handle setuid and setgid bits when ownership preservation fails"
}

CVE-2026-35350 (GCVE-0-2026-35350)

Vulnerability from cvelistv5 – Published: 2026-04-22 16:08 – Updated: 2026-04-22 17:58

Title

uutils coreutils cp Unexpected Privileged Executable Creation with -p

Summary

Severity

6.6 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-22 17:56 UTC

CWE

CWE-281 - Improper Preservation of Permissions

Assigner

canonical mitre root

References

1 reference

URL	Tags
https://github.com/uutils/coreutils/issues/9750	issue-tracking

Impacted products

1 product

Vendor	Product	Version
Uutils	coreutils

Credits

Zellic

Show details on NVD website

JSON

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                "id": "CVE-2026-35350",
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                  },
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                  },
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                  }
                ],
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                "timestamp": "2026-04-22T17:56:50.879133Z",
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      "metrics": [
        {
          "cvssV3_1": {
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.