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CVE-2026-42301— Improper Input Validation leading to Improper Control of Generation of Code ('Code Injection') in pyp2spec

CVSS 7.8 · High EPSS 0.03% · P7
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I. Basic Information for CVE-2026-42301

Vulnerability Information
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Vulnerability Title
Improper Input Validation leading to Improper Control of Generation of Code ('Code Injection') in pyp2spec
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
befelemepyp2spec < 0.14.1 -

II. Public POCs for CVE-2026-42301

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III. Intelligence Information for CVE-2026-42301

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IV. Related Vulnerabilities

Same weakness: CWE-20

V. Comments for CVE-2026-42301

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