CVE-2025-4138 (GCVE-0-2025-4138)

Vulnerability from cvelistv5 – Published: 2025-06-03 12:59 – Updated: 2026-04-21 20:16
VLAI
Title
Bypassing extraction filter to create symlinks to arbitrary targets outside extraction directory
Summary
Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata. 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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
PSF
References
Impacted products
Vendor Product Version
Python Software Foundation CPython Affected: 0 , < 3.10.18 (python)
Affected: 3.11.0 , < 3.11.13 (python)
Affected: 3.12.0 , < 3.12.11 (python)
Affected: 3.13.0 , < 3.13.4 (python)
Affected: 3.14.0a1 , < 3.14.0b3 (python)
Create a notification for this product.
Credits
Caleb Brown (Google) Petr Viktorin Serhiy Storchaka Hugo van Kemenade Łukasz Langa Thomas Wouters Seth Larson
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-4138",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-03T13:29:22.889454Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-03T13:29:36.599Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "tarfile"
          ],
          "product": "CPython",
          "repo": "https://github.com/python/cpython",
          "vendor": "Python Software Foundation",
          "versions": [
            {
              "lessThan": "3.10.18",
              "status": "affected",
              "version": "0",
              "versionType": "python"
            },
            {
              "lessThan": "3.11.13",
              "status": "affected",
              "version": "3.11.0",
              "versionType": "python"
            },
            {
              "lessThan": "3.12.11",
              "status": "affected",
              "version": "3.12.0",
              "versionType": "python"
            },
            {
              "lessThan": "3.13.4",
              "status": "affected",
              "version": "3.13.0",
              "versionType": "python"
            },
            {
              "lessThan": "3.14.0b3",
              "status": "affected",
              "version": "3.14.0a1",
              "versionType": "python"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Caleb Brown (Google)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Petr Viktorin"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Serhiy Storchaka"
        },
        {
          "lang": "en",
          "type": "remediation reviewer",
          "value": "Hugo van Kemenade"
        },
        {
          "lang": "en",
          "type": "remediation reviewer",
          "value": "\u0141ukasz Langa"
        },
        {
          "lang": "en",
          "type": "remediation reviewer",
          "value": "Thomas Wouters"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Seth Larson"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eAllows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata.\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\u003e\u003cspan style=\"background-color: var(--wht);\"\u003eNote that for Python 3.14 or later the default value of \u003c/span\u003e\u003ccode\u003efilter=\u003c/code\u003e\u003cspan style=\"background-color: var(--wht);\"\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/span\u003e\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"
            }
          ],
          "value": "Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata.\n\n\nYou are affected by this vulnerability if using the tarfile\u00a0module to extract untrusted tar archives using TarFile.extractall()\u00a0or TarFile.extract()\u00a0using the filter=\u00a0parameter with a value of \"data\"\u00a0or \"tar\". See the tarfile  extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter \u00a0for more information.\n\nNote that for Python 3.14 or later the default value of filter=\u00a0changed from \"no filtering\" to `\"data\", so if you are relying on this new default behavior then your usage is also affected.\n\nNote 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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-21T20:16:04.883Z",
        "orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "shortName": "PSF"
      },
      "references": [
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/python/cpython/issues/135034"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/pull/135037"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/MAXIJJCUUMCL7ATZNDVEGGHUMQMUUKLG/"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/3612d8f51741b11f36f8fb0494d79086bac9390a"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/9e0ac76d96cf80b49055f6d6b9a6763fb9215c2a"
        },
        {
          "tags": [
            "mitigation"
          ],
          "url": "https://gist.github.com/sethmlarson/52398e33eff261329a0180ac1d54f42f"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/19de092debb3d7e832e5672cc2f7b788d35951da"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/aa9eb5f757ceff461e6e996f12c89e5d9b583b01"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/28463dba112af719df1e8b0391c46787ad756dd9"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/4633f3f497b1ff70e4a35b6fe2c907cbe2d4cb2e"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/9c1110ef6652687d7c55f590f909720eddde965a"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/python/cpython/commit/dd8f187d0746da151e0025c51680979ac5b4cfb1"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Bypassing extraction filter to create symlinks to arbitrary targets outside extraction directory",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
    "assignerShortName": "PSF",
    "cveId": "CVE-2025-4138",
    "datePublished": "2025-06-03T12:59:02.717Z",
    "dateReserved": "2025-04-30T13:35:55.675Z",
    "dateUpdated": "2026-04-21T20:16:04.883Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-4138",
      "date": "2026-06-05",
      "epss": "0.00273",
      "percentile": "0.50942"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-4138\",\"sourceIdentifier\":\"cna@python.org\",\"published\":\"2025-06-03T13:15:20.377\",\"lastModified\":\"2025-06-05T14:15:32.767\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata.\\n\\n\\nYou are affected by this vulnerability if using the tarfile\u00a0module to extract untrusted tar archives using TarFile.extractall()\u00a0or TarFile.extract()\u00a0using the filter=\u00a0parameter with a value of \\\"data\\\"\u00a0or \\\"tar\\\". See the tarfile  extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter \u00a0for more information.\\n\\nNote that for Python 3.14 or later the default value of filter=\u00a0changed from \\\"no filtering\\\" to `\\\"data\\\", so if you are relying on this new default behavior then your usage is also affected.\\n\\nNote 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.\"},{\"lang\":\"es\",\"value\":\"Permite ignorar el filtro de extracci\u00f3n, lo que permite que los enlaces simb\u00f3licos apunten fuera del directorio de destino y la modificaci\u00f3n de algunos metadatos de archivo. Esta vulnerabilidad afecta al usar el m\u00f3dulo tarfile para extraer archivos tar no confiables mediante TarFile.extractall() o TarFile.extract() y el par\u00e1metro filter= con el valor \\\"data\\\" o \\\"tar\\\". Consulte la documentaci\u00f3n sobre filtros de extracci\u00f3n de archivos tar (https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter) para obtener m\u00e1s informaci\u00f3n. Solo las versiones de Python 3.12 o posteriores se ven afectadas por estas vulnerabilidades; las versiones anteriores no incluyen la funci\u00f3n de filtro de extracci\u00f3n. Tenga en cuenta que para Python 3.14 o posteriores, el valor predeterminado de filter= cambi\u00f3 de \\\"sin filtrado\\\" a \\\"data\\\", por lo que si utiliza este nuevo comportamiento predeterminado, su uso tambi\u00e9n se ver\u00e1 afectado. Tenga en cuenta que ninguna de estas vulnerabilidades afecta significativamente la instalaci\u00f3n de distribuciones de c\u00f3digo fuente que sean archivos tar, ya que estas permiten la ejecuci\u00f3n de c\u00f3digo arbitrario durante el proceso de compilaci\u00f3n. Sin embargo, al evaluar distribuciones de origen es importante evitar instalar distribuciones de origen con enlaces sospechosos.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cna@python.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"cna@python.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-22\"}]}],\"references\":[{\"url\":\"https://gist.github.com/sethmlarson/52398e33eff261329a0180ac1d54f42f\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/commit/19de092debb3d7e832e5672cc2f7b788d35951da\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/commit/28463dba112af719df1e8b0391c46787ad756dd9\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/commit/3612d8f51741b11f36f8fb0494d79086bac9390a\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/commit/4633f3f497b1ff70e4a35b6fe2c907cbe2d4cb2e\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/commit/9c1110ef6652687d7c55f590f909720eddde965a\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/commit/9e0ac76d96cf80b49055f6d6b9a6763fb9215c2a\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/commit/aa9eb5f757ceff461e6e996f12c89e5d9b583b01\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/commit/dd8f187d0746da151e0025c51680979ac5b4cfb1\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/issues/135034\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/pull/135037\",\"source\":\"cna@python.org\"},{\"url\":\"https://mail.python.org/archives/list/security-announce@python.org/thread/MAXIJJCUUMCL7ATZNDVEGGHUMQMUUKLG/\",\"source\":\"cna@python.org\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-4138\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-06-03T13:29:22.889454Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-06-03T13:29:26.403Z\"}}], \"cna\": {\"title\": \"Bypassing extraction filter to create symlinks to arbitrary targets outside extraction directory\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"Caleb Brown (Google)\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Petr Viktorin\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Serhiy Storchaka\"}, {\"lang\": \"en\", \"type\": \"remediation reviewer\", \"value\": \"Hugo van Kemenade\"}, {\"lang\": \"en\", \"type\": \"remediation reviewer\", \"value\": \"\\u0141ukasz Langa\"}, {\"lang\": \"en\", \"type\": \"remediation reviewer\", \"value\": \"Thomas Wouters\"}, {\"lang\": \"en\", \"type\": \"coordinator\", \"value\": \"Seth Larson\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://github.com/python/cpython\", \"vendor\": \"Python Software Foundation\", \"modules\": [\"tarfile\"], \"product\": \"CPython\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"3.10.18\", \"versionType\": \"python\"}, {\"status\": \"affected\", \"version\": \"3.11.0\", \"lessThan\": \"3.11.13\", \"versionType\": \"python\"}, {\"status\": \"affected\", \"version\": \"3.12.0\", \"lessThan\": \"3.12.11\", \"versionType\": \"python\"}, {\"status\": \"affected\", \"version\": \"3.13.0\", \"lessThan\": \"3.13.4\", \"versionType\": \"python\"}, {\"status\": \"affected\", \"version\": \"3.14.0a1\", \"lessThan\": \"3.14.0b3\", \"versionType\": \"python\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://github.com/python/cpython/issues/135034\", \"tags\": [\"issue-tracking\"]}, {\"url\": \"https://github.com/python/cpython/pull/135037\", \"tags\": [\"patch\"]}, {\"url\": \"https://mail.python.org/archives/list/security-announce@python.org/thread/MAXIJJCUUMCL7ATZNDVEGGHUMQMUUKLG/\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://github.com/python/cpython/commit/3612d8f51741b11f36f8fb0494d79086bac9390a\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/python/cpython/commit/9e0ac76d96cf80b49055f6d6b9a6763fb9215c2a\", \"tags\": [\"patch\"]}, {\"url\": \"https://gist.github.com/sethmlarson/52398e33eff261329a0180ac1d54f42f\", \"tags\": [\"mitigation\"]}, {\"url\": \"https://github.com/python/cpython/commit/19de092debb3d7e832e5672cc2f7b788d35951da\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/python/cpython/commit/aa9eb5f757ceff461e6e996f12c89e5d9b583b01\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/python/cpython/commit/28463dba112af719df1e8b0391c46787ad756dd9\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/python/cpython/commit/4633f3f497b1ff70e4a35b6fe2c907cbe2d4cb2e\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/python/cpython/commit/9c1110ef6652687d7c55f590f909720eddde965a\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/python/cpython/commit/dd8f187d0746da151e0025c51680979ac5b4cfb1\", \"tags\": [\"patch\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata.\\n\\n\\nYou are affected by this vulnerability if using the tarfile\\u00a0module to extract untrusted tar archives using TarFile.extractall()\\u00a0or TarFile.extract()\\u00a0using the filter=\\u00a0parameter with a value of \\\"data\\\"\\u00a0or \\\"tar\\\". See the tarfile  extraction filters documentation https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter \\u00a0for more information.\\n\\nNote that for Python 3.14 or later the default value of filter=\\u00a0changed from \\\"no filtering\\\" to `\\\"data\\\", so if you are relying on this new default behavior then your usage is also affected.\\n\\nNote 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.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eAllows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata.\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\u003e\u003cspan style=\\\"background-color: var(--wht);\\\"\u003eNote that for Python 3.14 or later the default value of \u003c/span\u003e\u003ccode\u003efilter=\u003c/code\u003e\u003cspan style=\\\"background-color: var(--wht);\\\"\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/span\u003e\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\": \"2026-04-21T20:16:04.883Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-4138\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-21T20:16:04.883Z\", \"dateReserved\": \"2025-04-30T13:35:55.675Z\", \"assignerOrgId\": \"28c92f92-d60d-412d-b760-e73465c3df22\", \"datePublished\": \"2025-06-03T12:59:02.717Z\", \"assignerShortName\": \"PSF\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.