Vulnerability-Lookup

CVE-2026-13346 (GCVE-0-2026-13346)

Vulnerability from cvelistv5 – Published: 2026-07-29 18:33 – Updated: 2026-07-29 20:21

Title

pip absolute path traversal during download from malicious package indexes

Summary

pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to arbitrary locations on disk even when installing wheels. This vulnerability requires downloading or installing a package from a malicious package index to succeed, malicious packages alone are not able to exploit this vulnerability. Note that this vulnerability only materially impacts users running `pip download` with the `--only-binary` option as installing source distributions from an untrusted index is already an unsafe operation that executes code during install time.

Severity

5.6 (Medium)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:N/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-36 - Absolute path traversal

Assigner

PSF

References

3 references

URL	Tags
https://github.com/pypa/pip/pull/14110	patch
https://mail.python.org/archives/list/security-an…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/07/29/7

Impacted products

1 product

Vendor	Product	Version
Python Packaging Authority	pip	Affected: 0 , < 26.2 (python)

Show details on NVD website

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GHSA-QWM4-QH6W-59XR

Vulnerability from github – Published: 2026-07-29 21:30 – Updated: 2026-07-29 21:30

Details

pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to arbitrary locations on disk even when installing wheels.

This vulnerability requires downloading or installing a package from a malicious package index to succeed, malicious packages alone are not able to exploit this vulnerability. Note that this vulnerability only materially impacts users running pip download with the --only-binary option as installing source distributions from an untrusted index is already an unsafe operation that executes code during install time.

Severity

5.6 (Medium)


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

Show details on source website

JSON

To clipboard

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  "affected": [],
  "aliases": [
    "CVE-2026-13346"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-36"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-29T19:16:44Z",
    "severity": "MODERATE"
  },
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  "id": "GHSA-qwm4-qh6w-59xr",
  "modified": "2026-07-29T21:30:59Z",
  "published": "2026-07-29T21:30:59Z",
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13346"
    },
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    },
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  "schema_version": "1.4.0",
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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-13346 (GCVE-0-2026-13346)

GHSA-QWM4-QH6W-59XR

Tags

Sightings

Nomenclature