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CVE-2026-19672 affecting package python-py 1.11.0-1

Type: advisorySources: OSV

The tarfile module's tar and data extraction filters created directories outside the destination for members whose name leaves the destination and returns to it, such as ../evil/../dest/sub/file. The containment check used the resolved path, but intermediate directories were created from the name as given. Only empty directories are created outside the destination. Member contents are still extracted inside it. To return to the destination the member's name must contain the destination directory's own final component, so extraction into a secure randomised directory is not affected. This affects POSIX platforms only. On Windows, .. components are collapsed before the path reaches the filesystem, so the directories outside the destination are never created.

Products
python-py
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-19672
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 17:31 UTC · Revision 1

Source evidence

CVE-2026-19672 affecting package python-py 1.11.0-1

core-osv · Original source

Published 19 Aug 2026, 16:17 UTC

The tarfile module's tar and data extraction filters created directories outside the destination for members whose name leaves the destination and returns to it, such as ../evil/../dest/sub/file. The containment check used the resolved path, but intermediate directories were created from the name as given. Only empty directories are created outside the destination. Member contents are still extracted inside it. To return to the destination the member's name must contain the destination directory's own final component, so extraction into a secure randomised directory is not affected. This affects POSIX platforms only. On Windows, .. components are collapsed before the path reaches the filesystem, so the directories outside the destination are never created.

osv:AZL-110510

python-py

Fixed versions: Not specified

Complete source record
{
  "id": "37432d6daa7567df2c79863625e93284299b2eb006c566a0a32fc69067c455b9",
  "url": "https://osv.dev/vulnerability/AZL-110510",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-19672 affecting package python-py 1.11.0-1",
    "summary": "The tarfile module's tar and data extraction filters created directories outside the destination for members whose name leaves the destination and returns to it, such as ../evil/../dest/sub/file. The containment check used the resolved path, but intermediate directories were created from the name as given. Only empty directories are created outside the destination. Member contents are still extracted inside it. To return to the destination the member's name must contain the destination directory's own final component, so extraction into a secure randomised directory is not affected. This affects POSIX platforms only. On Windows, .. components are collapsed before the path reaches the filesystem, so the directories outside the destination are never created.",
    "evidence": "osv:AZL-110510",
    "products": [
      {
        "name": {
          "value": "python-py",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "AZL-110510",
      "aliases": [
        "AZL-110510"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "1.11.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "python-py",
            "purl": "pkg:rpm/azure-linux/python-py",
            "ecosystem": "Azure Linux:3"
          },
          "database_specific": {
            "source": "https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-110510.json"
          }
        }
      ],
      "modified": "2026-10-27T05:36:16Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-19672"
      ],
      "references": [
        "https://nvd.nist.gov/vuln/detail/CVE-2026-19672"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-19672",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 460635,
  "published_at": "2026-08-19T16:17:06+00:00"
}