CVE-2026-42301
Improper Input Validation leading to Improper Control of Generation of Code ('Code Injection') in pyp2spec
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-20 CWE-94 |
| Vendor | befeleme |
| Product | pyp2spec |
| Published | May 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
befeleme / pyp2spec
< 0.14.1