VULNERABILITY INTELLIGENCE

CVE-2026-42301

CVSS score7.8 HIGH
EPSS probability0.20%
CISA KEVNot currently listed
Published2026-05-09
Last modified2026-07-24
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Weakness classification

  • security-advisories@github.com: CWE-20

Primary references