Arbitrary Code Injection Affecting pyp2spec package, versions [,0.14.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published11 May 2026
- disclosed4 May 2026
- creditouldnicholas
Introduced: 4 May 2026
NewCVE-2026-42301 (opens in a new tab)How to fix?
Upgrade pyp2spec to version 0.14.1 or higher.
Overview
pyp2spec is a Generate a valid Fedora specfile from Python package from PyPI
Affected versions of this package are vulnerable to Arbitrary Code Injection in the process of writing package metadata into the generated spec file without escaping RPM macro directives. An attacker can execute arbitrary commands on the build machine by publishing a malicious package with crafted metadata fields that are evaluated during spec parsing.