Python CPython up to 3.14.x pkgutil.get_data resource path traversal

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Python CPython up to 3.14.x. Affected by this issue is the function pkgutil.get_data. The manipulation of the argument resource results in path traversal. This vulnerability is cataloged as CVE-2026-3479. The attack must be initiated from a local position. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Python CPython up to 3.14.x. Affected is the function pkgutil.get_data. The manipulation of the argument resource with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

pkgutil.get_data() did not validate the resource argument as documented, allowing path traversals.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-3479 since 03/03/2026. The exploitability is told to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 303113 (Linux Distros Unpatched Vulnerability : CVE-2026-3479), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.15.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202603-3361), Tenable (303113), EUVD (EUVD-2026-12940) and CERT Bund (WID-SEC-2026-0791). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • SUSE Linux
  • SUSE openSUSE
  • Open Source Python

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 303113
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-3479

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: CPython 3.15.0

Timelineinfo

03/03/2026 CVE reserved
03/18/2026 +15 days Advisory disclosed
03/18/2026 +0 days VulDB entry created
05/15/2026 +58 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-3479 (🔒)
GCVE (CVE): GCVE-0-2026-3479
GCVE (VulDB): GCVE-100-351594
EUVD: 🔒
CERT Bund: WID-SEC-2026-0791 - Python: Schwachstelle ermöglicht Path Traversal
CNNVD: CNNVD-202603-3361 - CPython 安全漏洞

Entryinfo

Created: 03/18/2026 20:01
Updated: 05/15/2026 11:01
Changes: 03/18/2026 20:01 (69), 03/19/2026 02:18 (1), 03/19/2026 19:09 (7), 03/20/2026 01:05 (6), 03/23/2026 21:38 (2), 03/24/2026 23:32 (1), 05/15/2026 11:01 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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