Vulnerability-Lookup

PYSEC-2026-2876

Vulnerability from pysec - Published: 2026-07-13 15:02 - Updated: 2026-07-13 16:05

Details

pip prior to version 26.1 would run self-update check functionality after installing wheel files which required importing well-known Python modules names. These module imports were intentionally deferred to increase startup time of the pip CLI. The patch changes self-update functionality to run before wheels are installed to prevent newly-installed modules from being imported shortly after the installation of a wheel package. Users should still review package contents prior to installation.

Severity

5.3 (Medium)


                  
                    CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Impacted products

Name	purl
pip	pkg:pypi/pip

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pip",
        "purl": "pkg:pypi/pip"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "26.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2",
        "0.2.1",
        "0.3",
        "0.3.1",
        "0.4",
        "0.5",
        "0.5.1",
        "0.6",
        "0.6.1",
        "0.6.2",
        "0.6.3",
        "0.7",
        "0.7.1",
        "0.7.2",
        "0.8",
        "0.8.1",
        "0.8.2",
        "0.8.3",
        "1.0",
        "1.0.1",
        "1.0.2",
        "1.1",
        "1.2",
        "1.2.1",
        "1.3",
        "1.3.1",
        "1.4",
        "1.4.1",
        "1.5",
        "1.5.1",
        "1.5.2",
        "1.5.3",
        "1.5.4",
        "1.5.5",
        "1.5.6",
        "10.0.0",
        "10.0.0b1",
        "10.0.0b2",
        "10.0.1",
        "18.0",
        "18.1",
        "19.0",
        "19.0.1",
        "19.0.2",
        "19.0.3",
        "19.1",
        "19.1.1",
        "19.2",
        "19.2.1",
        "19.2.2",
        "19.2.3",
        "19.3",
        "19.3.1",
        "20.0",
        "20.0.1",
        "20.0.2",
        "20.1",
        "20.1.1",
        "20.1b1",
        "20.2",
        "20.2.1",
        "20.2.2",
        "20.2.3",
        "20.2.4",
        "20.2b1",
        "20.3",
        "20.3.1",
        "20.3.2",
        "20.3.3",
        "20.3.4",
        "20.3b1",
        "21.0",
        "21.0.1",
        "21.1",
        "21.1.1",
        "21.1.2",
        "21.1.3",
        "21.2",
        "21.2.1",
        "21.2.2",
        "21.2.3",
        "21.2.4",
        "21.3",
        "21.3.1",
        "22.0",
        "22.0.1",
        "22.0.2",
        "22.0.3",
        "22.0.4",
        "22.1",
        "22.1.1",
        "22.1.2",
        "22.1b1",
        "22.2",
        "22.2.1",
        "22.2.2",
        "22.3",
        "22.3.1",
        "23.0",
        "23.0.1",
        "23.1",
        "23.1.1",
        "23.1.2",
        "23.2",
        "23.2.1",
        "23.3",
        "23.3.1",
        "23.3.2",
        "24.0",
        "24.1",
        "24.1.1",
        "24.1.2",
        "24.1b1",
        "24.1b2",
        "24.2",
        "24.3",
        "24.3.1",
        "25.0",
        "25.0.1",
        "25.1",
        "25.1.1",
        "25.2",
        "25.3",
        "26.0",
        "26.0.1",
        "6.0",
        "6.0.1",
        "6.0.2",
        "6.0.3",
        "6.0.4",
        "6.0.5",
        "6.0.6",
        "6.0.7",
        "6.0.8",
        "6.1.0",
        "6.1.1",
        "7.0.0",
        "7.0.1",
        "7.0.2",
        "7.0.3",
        "7.1.0",
        "7.1.1",
        "7.1.2",
        "8.0.0",
        "8.0.1",
        "8.0.2",
        "8.0.3",
        "8.1.0",
        "8.1.1",
        "8.1.2",
        "9.0.0",
        "9.0.1",
        "9.0.2",
        "9.0.3"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-6357",
    "GHSA-jp4c-xjxw-mgf9"
  ],
  "details": "pip prior to version 26.1 would run self-update check functionality after installing wheel files which required importing well-known Python modules names. These module imports were intentionally deferred to increase startup time of the pip CLI. The patch changes self-update functionality to run before wheels are installed to prevent newly-installed modules from being imported shortly after the installation of a wheel package. Users should still review package contents prior to installation.",
  "id": "PYSEC-2026-2876",
  "modified": "2026-07-13T16:05:34.071920Z",
  "published": "2026-07-13T15:02:53.633904Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6357"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/pip/pull/13923"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/pip/commit/b369bfc96cc524e00c267e1693290e6599c36bad"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pypa/pip"
    },
    {
      "type": "WEB",
      "url": "https://ichard26.github.io/blog/2026/04/whats-new-in-pip-26.1/#security-fixes"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/27/7"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/pip"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-jp4c-xjxw-mgf9"
    }
  ],
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "pip Vulnerable to Inclusion of Functionality from Untrusted Control Sphere"
}

CVE-2026-6357 (GCVE-0-2026-6357)

Vulnerability from cvelistv5 – Published: 2026-04-27 14:19 – Updated: 2026-04-27 22:17

Title

pip self-update functionality can import newly installed modules after wheel installation

Summary

Severity

5.3 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-829 - Inclusion of Functionality from Untrusted Control Sphere

Assigner

PSF

References

3 references

URL	Tags
https://github.com/pypa/pip/pull/13923	patch
https://ichard26.github.io/blog/2026/04/whats-new…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/04/27/7

Impacted products

1 product

Vendor	Product	Version
Pip maintainers	pip	Affected: 0 , < 26.1 (python)

Credits

Damian Shaw Damian Shaw Richard Si Seth Larson

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-6357",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-27T16:08:15.074450Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-829",
                "description": "CWE-829 Inclusion of Functionality from Untrusted Control Sphere",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-27T16:08:47.582Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-04-27T22:17:49.582Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/04/27/7"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pypi.org/project/pip",
          "defaultStatus": "unaffected",
          "packageName": "pip",
          "product": "pip",
          "repo": "https://github.com/pypa/pip",
          "vendor": "Pip maintainers",
          "versions": [
            {
              "lessThan": "26.1",
              "status": "affected",
              "version": "0",
              "versionType": "python"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Damian Shaw"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Damian Shaw"
        },
        {
          "lang": "en",
          "type": "remediation reviewer",
          "value": "Richard Si"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Seth Larson"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "pip prior to version 26.1 would run self-update check functionality after installing wheel files which required importing well-known Python modules names. These module imports were intentionally deferred to increase startup time of the pip CLI. The patch changes self-update functionality to run before wheels are installed to prevent newly-installed modules from being imported shortly after the installation of a wheel package. Users should still review package contents prior to installation."
            }
          ],
          "value": "pip prior to version 26.1 would run self-update check functionality after installing wheel files which required importing well-known Python modules names. These module imports were intentionally deferred to increase startup time of the pip CLI. The patch changes self-update functionality to run before wheels are installed to prevent newly-installed modules from being imported shortly after the installation of a wheel package. Users should still review package contents prior to installation."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "LOCAL",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "HIGH",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-27T14:19:47.657Z",
        "orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "shortName": "PSF"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/pypa/pip/pull/13923"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://ichard26.github.io/blog/2026/04/whats-new-in-pip-26.1/#security-fixes"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "pip self-update functionality can import newly installed modules after wheel installation",
      "x_generator": {
        "engine": "Vulnogram 0.6.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
    "assignerShortName": "PSF",
    "cveId": "CVE-2026-6357",
    "datePublished": "2026-04-27T14:19:47.657Z",
    "dateReserved": "2026-04-15T13:55:02.734Z",
    "dateUpdated": "2026-04-27T22:17:49.582Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

GHSA-JP4C-XJXW-MGF9

Vulnerability from github – Published: 2026-04-27 15:30 – Updated: 2026-05-05 22:05

Summary

pip Vulnerable to Inclusion of Functionality from Untrusted Control Sphere

Details

Severity

5.3 (Medium)


                  
                    CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pip"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "26.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-6357"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-829"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-05T22:05:46Z",
    "nvd_published_at": "2026-04-27T15:16:20Z",
    "severity": "MODERATE"
  },
  "details": "pip prior to version 26.1 would run self-update check functionality after installing wheel files which required importing well-known Python modules names. These module imports were intentionally deferred to increase startup time of the pip CLI. The patch changes self-update functionality to run before wheels are installed to prevent newly-installed modules from being imported shortly after the installation of a wheel package. Users should still review package contents prior to installation.",
  "id": "GHSA-jp4c-xjxw-mgf9",
  "modified": "2026-05-05T22:05:46Z",
  "published": "2026-04-27T15:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6357"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/pip/pull/13923"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/pip/commit/b369bfc96cc524e00c267e1693290e6599c36bad"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pypa/pip"
    },
    {
      "type": "WEB",
      "url": "https://ichard26.github.io/blog/2026/04/whats-new-in-pip-26.1/#security-fixes"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/27/7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "pip Vulnerable to Inclusion of Functionality from Untrusted Control Sphere"
}

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.

Action not permitted

PYSEC-2026-2876

CVE-2026-6357 (GCVE-0-2026-6357)

GHSA-JP4C-XJXW-MGF9

Tags

Sightings

Nomenclature