CVE-2026-42301

HighCVSS 7.8/10Last modified Jul 24, 2026

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-20 CWE-94

Affected software

No affected versions have been published.

Timeline

Published: May 9, 2026
Last modified: Jul 24, 2026
NVD status: Deferred

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