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uutils coreutils mv Denial of Service and Data Duplication via Improper Symlink Expansion

Type: advisorySources: OSV

The mv utility in uutils coreutils improperly handles directory trees containing symbolic links during moves across filesystem boundaries. Instead of preserving symlinks, the implementation expands them, copying the linked targets as real files or directories at the destination. This can lead to resource exhaustion (disk space or time) if symlinks point to large external directories, unexpected duplication of sensitive data into unintended locations, or infinite recursion and repeated copying in the presence of symlink loops.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-35365
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 23:43 UTC · Revision 1

Source evidence

uutils coreutils mv Denial of Service and Data Duplication via Improper Symlink Expansion

core-osv · Original source

Published 22 Apr 2026, 16:08 UTC

The mv utility in uutils coreutils improperly handles directory trees containing symbolic links during moves across filesystem boundaries. Instead of preserving symlinks, the implementation expands them, copying the linked targets as real files or directories at the destination. This can lead to resource exhaustion (disk space or time) if symlinks point to large external directories, unexpected duplication of sensitive data into unintended locations, or infinite recursion and repeated copying in the presence of symlink loops.

osv:CVE-2026-35365
Complete source record
{
  "id": "4dc998c2699337651c2cffd985c336d7d99644a0f7c0d69fe90274bd7a2d334c",
  "url": "https://osv.dev/vulnerability/CVE-2026-35365",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "uutils coreutils mv Denial of Service and Data Duplication via Improper Symlink Expansion",
    "summary": "The mv utility in uutils coreutils improperly handles directory trees containing symbolic links during moves across filesystem boundaries. Instead of preserving symlinks, the implementation expands them, copying the linked targets as real files or directories at the destination. This can lead to resource exhaustion (disk space or time) if symlinks point to large external directories, unexpected duplication of sensitive data into unintended locations, or infinite recursion and repeated copying in the presence of symlink loops.",
    "evidence": "osv:CVE-2026-35365",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-35365",
      "aliases": [
        "CVE-2026-35365",
        "GHSA-h444-6j9x-p8vh"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/uutils/coreutils",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "995c9e04a6cc34a3a95b23a26fa59ae87e7744bd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.7.0"
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                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "995c9e04a6cc34a3a95b23a26fa59ae87e7744bd"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "0.7.0"
                  },
                  {
                    "cpe": "cpe:2.3:a:uutils:coreutils:*:*:*:*:*:rust:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.7.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.6.0",
            "latest-commit",
            "0.5.0",
            "0.4.0",
            "0.3.0",
            "0.2.2",
            "0.2.0",
            "0.1.0",
            "0.0.30-delete",
            "0.0.30",
            "0.0.29",
            "0.0.28",
            "0.0.27",
            "0.0.26",
            "0.0.25",
            "0.0.24",
            "0.0.23",
            "0.0.22",
            "0.0.21",
            "0.0.20",
            "0.0.19",
            "0.0.18",
            "0.0.17",
            "0.0.16",
            "0.0.15",
            "0.0.14",
            "0.0.13",
            "0.0.12",
            "0.0.9",
            "0.0.8",
            "0.0.7",
            "0.0.6",
            "0.0.5",
            "0.0.3",
            "0.0.2",
            "0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-35365.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.585257653Z",
      "provider": "osv",
      "references": [
        "https://github.com/uutils",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35365.json",
        "https://github.com/uutils/coreutils/releases/tag/0.7.0",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-35365",
        "https://github.com/uutils/coreutils/pull/10546",
        "https://github.com/uutils/coreutils"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-59"
        ],
        "cna_assigner": "canonical",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35365.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-35365",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 508087,
  "published_at": "2026-04-22T16:08:41.136+00:00"
}