cockpit-files — security advisory

{
  "id": "994ca108bfd26b961a8288927c08b8dadb54795a93656e584477b542842b9fb4",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-91202",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-91202",
    "summary": "A flaw was found in cockpit-files. A low-privileged local user can exploit this vulnerability by crafting a directory containing a symbolic link (symlink) and then using the privileged \"Paste as owner\" function. This allows for arbitrary file ownership changes outside the intended pasted directory, leading to a compromise of data integrity. In some cases, this could also lead to reduced confidentiality if the new ownership grants unauthorized read access. Exploitation requires user interaction to select a non-original owner during the paste operation.",
    "evidence": "osv:UBUNTU-CVE-2026-91202",
    "products": [
      {
        "name": {
          "value": "cockpit-files",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "39-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "40-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "41-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "43-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "44-1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "cockpit-files",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "36-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "39-1",
            "evidence": "/affected/1/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "UBUNTU-CVE-2026-91202",
      "aliases": [
        "UBUNTU-CVE-2026-91202"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:L"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "cockpit-files",
            "purl": "pkg:deb/ubuntu/cockpit-files?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "39-1",
            "40-1",
            "41-1",
            "43-1",
            "44-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91202.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "cockpit-files",
                "binary_version": "44-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "cockpit-files",
            "purl": "pkg:deb/ubuntu/cockpit-files?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "36-1",
            "39-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-91202.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "cockpit-files",
                "binary_version": "39-1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T13:01:16.953710213Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-91202"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-91202",
        "https://www.cve.org/CVERecord?id=CVE-2026-91202",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2465834",
        "https://access.redhat.com/security/cve/CVE-2026-91202"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-91202",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 361490,
  "published_at": "2026-09-18T20:17:00+00:00"
}