CVE-2026-42301

HIGH SEVERITY

CVSS Score & Metrics

Base Score

7.8 / 10

Vector String

                                        CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H                                    

Vulnerability Description

pyp2spec generates working Fedora RPM spec file for Python projects. Prior to version 0.14.1, pyp2spec was writing PyPI package metadata (e.g. the summary field) into the generated spec file without escaping RPM macro directives. When a packager then runs rpmbuild, those directives get evaluated, so a malicious package can execute arbitrary commands on the build machine. This issue has been patched in version 0.14.1.

Vulnerability Details

Published Date

May 04, 2026

Last Modified

May 13, 2026

CWE ID

CWE-20

Source

GitHub

Vendor

pip

Product

pyp2spec

External References

https://github.com/befeleme/pyp2spec/security/advisories/GHSA-r35x-v8p8-xvhw
https://github.com/advisories/GHSA-r35x-v8p8-xvhw

CVE-2026-42301

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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