CVE-2025-4517 (GCVE-0-2025-4517)
Vulnerability from cvelistv5
Published
2025-06-03 12:58
Modified
2025-07-07 17:36
Severity ?
9.4 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Summary
Allows arbitrary filesystem writes outside the extraction directory during extraction with filter="data". You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.extract() using the filter= parameter with a value of "data" or "tar". See the tarfile extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter  for more information. Note that for Python 3.14 or later the default value of filter= changed from "no filtering" to `"data", so if you are relying on this new default behavior then your usage is also affected. Note that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it's important to avoid installing source distributions with suspicious links.
References
Impacted products
Vendor Product Version
Python Software Foundation CPython Version: 0
Version: 3.10.0
Version: 3.11.0
Version: 3.12.0
Version: 3.13.0
Version: 3.14.0a1
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However when evaluating source distributions it\u0027s important to avoid installing source distributions with suspicious links.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eAllows arbitrary filesystem writes outside the extraction directory during extraction with \u003c/span\u003e\u003ccode\u003efilter=\\\"data\\\"\u003c/code\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003e.\u003c/span\u003e\u003cbr\u003e\u003c/p\u003e\u003cp\u003eYou are affected by this vulnerability if using the \u003ccode\u003etarfile\u003c/code\u003e\u0026nbsp;module to extract untrusted tar archives using \u003ccode\u003eTarFile.extractall()\u003c/code\u003e\u0026nbsp;or \u003ccode\u003eTarFile.extract()\u003c/code\u003e\u0026nbsp;using the \u003ccode\u003efilter=\u003c/code\u003e\u0026nbsp;parameter with a value of \u003ccode\u003e\\\"data\\\"\u003c/code\u003e\u0026nbsp;or \u003ccode\u003e\\\"tar\\\"\u003c/code\u003e. See the tarfile \u003ca target=\\\"_blank\\\" rel=\\\"nofollow\\\" href=\\\"https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter\\\"\u003eextraction filters documentation\u003c/a\u003e\u0026nbsp;for more information.\u003c/p\u003e\u003cp\u003eNote that for Python 3.14 or later the default value of \u003ccode\u003efilter=\u003c/code\u003e\u0026nbsp;changed from \\\"no filtering\\\" to `\\\"data\\\", so if you are relying on this new default behavior then your usage is also affected.\u003c/p\u003e\u003cp\u003eNote that none of these vulnerabilities significantly affect the installation of source distributions which are tar archives as source distributions already allow arbitrary code execution during the build process. However when evaluating source distributions it\u0027s important to avoid installing source distributions with suspicious links.\u003cbr\u003e\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-22\", \"description\": \"CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"28c92f92-d60d-412d-b760-e73465c3df22\", \"shortName\": \"PSF\", \"dateUpdated\": \"2025-07-07T17:36:26.194Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-4517\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-07-07T17:36:26.194Z\", \"dateReserved\": \"2025-05-09T15:05:07.139Z\", \"assignerOrgId\": \"28c92f92-d60d-412d-b760-e73465c3df22\", \"datePublished\": \"2025-06-03T12:58:50.352Z\", \"assignerShortName\": \"PSF\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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