CVE-2026-113719 (GCVE-0-2026-113719)

Vulnerability from cvelistv5 – Published: 2026-10-20 19:42 – Updated: 2026-10-20 19:42
VLAI
Title
virtualenv: Seed replacement does not contain metadata deletion paths
Summary
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, PipInstall._uninstall_previous_version() accepts existing seed-package metadata and _uninstall_dist() joins entries from top_level.txt and RECORD to site-packages without checking containment. When a reused destination contains distribution metadata influenced by another account, relative traversal, absolute entries, or linked parents can cause app-data reseeding to delete files outside the environment or the environment root with the invoking user's permissions, provided that user has deletion rights over the named paths. The deletion occurs during environment creation before any later use of the environment. Fresh environments without existing package metadata and creation with --clear do not enter this cleanup path. This issue is fixed in version 21.14.9.
Severity
4.5 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7657 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
pypa virtualenv Affected: < 21.14.9
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "virtualenv",
          "vendor": "pypa",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 21.14.9"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, PipInstall._uninstall_previous_version() accepts existing seed-package metadata and _uninstall_dist() joins entries from top_level.txt and RECORD to site-packages without checking containment. When a reused destination contains distribution metadata influenced by another account, relative traversal, absolute entries, or linked parents can cause app-data reseeding to delete files outside the environment or the environment root with the invoking user\u0027s permissions, provided that user has deletion rights over the named paths. The deletion occurs during environment creation before any later use of the environment. Fresh environments without existing package metadata and creation with --clear do not enter this cleanup path. This issue is fixed in version 21.14.9."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 4.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "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": "2026-10-20T19:42:07.523Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/pypa/virtualenv/security/advisories/GHSA-hhxq-47xx-j5xx",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/pypa/virtualenv/security/advisories/GHSA-hhxq-47xx-j5xx"
        },
        {
          "name": "https://github.com/pypa/virtualenv/pull/3428",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pypa/virtualenv/pull/3428"
        },
        {
          "name": "https://github.com/pypa/virtualenv/commit/e3cea6fa10a50fa29cf1fdddd772458fba076d5f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pypa/virtualenv/commit/e3cea6fa10a50fa29cf1fdddd772458fba076d5f"
        },
        {
          "name": "https://github.com/pypa/virtualenv/releases/tag/21.14.9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pypa/virtualenv/releases/tag/21.14.9"
        }
      ],
      "source": {
        "advisory": "GHSA-hhxq-47xx-j5xx",
        "discovery": "UNKNOWN"
      },
      "title": "virtualenv: Seed replacement does not contain metadata deletion paths"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-113719",
    "datePublished": "2026-10-20T19:42:07.523Z",
    "dateReserved": "2026-10-20T16:03:14.863Z",
    "dateUpdated": "2026-10-20T19:42:07.523Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-113719",
      "date": "2026-10-22",
      "epss": "0.00117",
      "percentile": "0.01569"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "virtualenv",
                "vendor": "pypa",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 21.14.9"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, PipInstall._uninstall_previous_version() accepts existing seed-package metadata and _uninstall_dist() joins entries from top_level.txt and RECORD to site-packages without checking containment. When a reused destination contains distribution metadata influenced by another account, relative traversal, absolute entries, or linked parents can cause app-data reseeding to delete files outside the environment or the environment root with the invoking user\u0027s permissions, provided that user has deletion rights over the named paths. The deletion occurs during environment creation before any later use of the environment. Fresh environments without existing package metadata and creation with --clear do not enter this cleanup path. This issue is fixed in version 21.14.9."
          }
        ],
        "id": "CVE-2026-113719",
        "lastModified": "2026-10-22T16:47:38.403",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "LOW",
                "baseScore": 4.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
                "version": "3.1"
              },
              "exploitabilityScore": 1.0,
              "impactScore": 3.4,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-20T20:17:18.347",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/pypa/virtualenv/commit/e3cea6fa10a50fa29cf1fdddd772458fba076d5f"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/pypa/virtualenv/pull/3428"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/pypa/virtualenv/releases/tag/21.14.9"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/pypa/virtualenv/security/advisories/GHSA-hhxq-47xx-j5xx"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-22"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-20T20:22:13+00:00",
      "cve": "CVE-2026-113719",
      "id": "CVE-2026-113719",
      "initial_release_date": "2026-10-20T19:42:07.523000+00:00",
      "product_status:known_affected": "26",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "virtualenv: virtualenv: Arbitrary file deletion via path traversal in package metadata",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-113719.json",
      "version": "3"
    }
  }
}



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