Vulnerability-Lookup

GHSA-M976-87WM-48FM

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

Details

A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mv utility of uutils coreutils during cross-device operations. The utility removes the destination path before recreating it through a copy operation. A local attacker with write access to the destination directory can exploit this window to replace the destination with a symbolic link. The subsequent privileged move operation will follow the symlink, allowing the attacker to redirect the write and overwrite an arbitrary target file with contents from the source.

Severity ?

6.3 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-35364"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T17:16:39Z",
    "severity": "MODERATE"
  },
  "details": "A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the mv utility of uutils coreutils during cross-device operations. The utility removes the destination path before recreating it through a copy operation. A local attacker with write access to the destination directory can exploit this window to replace the destination with a symbolic link. The subsequent privileged move operation will follow the symlink, allowing the attacker to redirect the write and overwrite an arbitrary target file with contents from the source.",
  "id": "GHSA-m976-87wm-48fm",
  "modified": "2026-04-22T18:31:45Z",
  "published": "2026-04-22T18:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35364"
    },
    {
      "type": "WEB",
      "url": "https://github.com/uutils/coreutils/issues/10015"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-35364 (GCVE-0-2026-35364)

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

Title

uutils coreutils mv Arbitrary File Overwrite via Cross-Device TOCTOU Race Condition

Summary

Severity ?

6.3 (Medium)


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

CWE

CWE-367 - Time-of-Check Time-of-Use (TOCTOU) Race Condition

Assigner

canonical

References

URL

Tags

https://github.com/uutils/coreutils/issues/10015

issue-tracking

Impacted products

	Vendor	Product	Version
	Uutils	coreutils

Credits

Zellic

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-35364",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-22T17:21:47.040687Z",
                "version": "2.0.3"
              },
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          {
            "tags": [
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            "url": "https://github.com/uutils/coreutils/issues/10015"
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      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/uutils",
          "defaultStatus": "affected",
          "packageName": "coreutils",
          "platforms": [
            "Linux",
            "Unix",
            "macOS"
          ],
          "product": "coreutils",
          "repo": "https://github.com/uutils/coreutils",
          "vendor": "Uutils"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
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      "descriptions": [
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        }
      ],
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          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "scenarios": [
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    "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
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    "dateReserved": "2026-04-02T12:58:56.088Z",
    "dateUpdated": "2026-04-22T17:22:25.742Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-M976-87WM-48FM

CVE-2026-35364 (GCVE-0-2026-35364)

Tags

Sightings

Nomenclature