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OpenAdvisories
High · 7.8 CVE-2026-42301 EUVD-2026-28896GHSA-r35x-v8p8-xvhwPYSEC-2026-3003

Improper Input Validation leading to Improper Control of Generation of Code ('Code Injection') in pyp2spec

Published May 9, 2026 · Updated May 11, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
befeleme pyp2spec < 0.14.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI pyp2spec < 0.14.1 0.14.1 GHSA-r35x-v8p8-xvhw

References