Vulnerability-Lookup

GHSA-M26V-HJQ3-X245

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) vulnerability exists in the install utility of uutils coreutils when using the -D flag. The command creates parent directories and subsequently performs a second path resolution to create the target file, neither of which is anchored to a directory file descriptor. An attacker with concurrent write access can replace a path component with a symbolic link between these operations, redirecting the privileged write to an arbitrary file system location.

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-2026-35356"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T17:16:38Z",
    "severity": "MODERATE"
  },
  "details": "A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the install utility of uutils coreutils when using the -D flag. The command creates parent directories and subsequently performs a second path resolution to create the target file, neither of which is anchored to a directory file descriptor. An attacker with concurrent write access can replace a path component with a symbolic link between these operations, redirecting the privileged write to an arbitrary file system location.",
  "id": "GHSA-m26v-hjq3-x245",
  "modified": "2026-04-22T18:31:45Z",
  "published": "2026-04-22T18:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35356"
    },
    {
      "type": "WEB",
      "url": "https://github.com/uutils/coreutils/pull/10140"
    },
    {
      "type": "WEB",
      "url": "https://github.com/uutils/coreutils/releases/tag/0.7.0"
    }
  ],
  "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-2026-35356 (GCVE-0-2026-35356)

Vulnerability from cvelistv5 – Published: 2026-04-22 16:08 – Updated: 2026-04-22 18:00

Title

uutils coreutils install Arbitrary File Overwrite with -D via Path Component Symlink Race

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/pull/10140	patchissue-tracking
	https://github.com/uutils/coreutils/releases/tag/0.7.0	vendor-advisory

Impacted products

	Vendor	Product	Version
	Uutils	coreutils	Affected: 0 , < 0.7.0 (semver)

Credits

Zellic

Show details on NVD website

JSON

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        "metrics": [
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                "id": "CVE-2026-35356",
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                  },
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                "timestamp": "2026-04-22T17:59:48.307644Z",
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      "metrics": [
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            "confidentialityImpact": "NONE",
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            "privilegesRequired": "LOW",
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  },
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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-M26V-HJQ3-X245

CVE-2026-35356 (GCVE-0-2026-35356)

Tags

Sightings

Nomenclature