What’s Vulnerable › Vulnerabilities

CVE-2026-23949: jaraco.context Has a Path Traversal Vulnerability

• Severity: high (CVSS 8.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-20 · updated 2026-06-17
• Weakness: CWE-22

Description

jaraco.context, an open-source software package that provides some useful decorators and context managers, has a Zip Slip path traversal vulnerability in the `jaraco.context.tarball()` function starting in version 5.2.0 and prior to version 6.1.0. The vulnerability may allow attackers to extract files outside the intended extraction directory when malicious tar archives are processed. The strip_first_component filter splits the path on the first `/` and extracts the second component, while allowing `../` sequences. Paths like `dummy_dir/../../etc/passwd` become `../../etc/passwd`. Note that this suffers from a nested tarball attack as well with multi-level tar files such as `dummy_dir/inner.tar.gz`, where the inner.tar.gz includes a traversal `dummy_dir/../../config/.env` that also gets translated to `../../config/.env`. Version 6.1.0 contains a patch for the issue.

Affected products

• jaraco.context: from 5.2.0 before 6.1.0 — fixed in 6.1.0

How to fix

Upgrade to a fixed version: jaraco.context 6.1.0. Check the vendor advisory for mitigations.

References

• https://github.com/jaraco/jaraco.context/blob/main/jaraco/context/__init__.py#L74-L91
• https://github.com/jaraco/jaraco.context/commit/7b26a42b525735e4085d2e994e13802ea339d5f9
• https://github.com/jaraco/jaraco.context/security/advisories/GHSA-58pv-8j8x-9vj2
• https://github.com/pypa/setuptools/blob/main/setuptools/_vendor/jaraco/context.py#L55-L76

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