CVE-2026-42301: Befeleme PYP2SPEC

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Befeleme PYP2SPEC: before 0.14.1 (fixed in 0.14.1)

Published 2026-05-09. Last modified 2026-07-24.