CVE-2026-42301

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2026-42301

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42301.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-42301

Aliases

Published

2026-05-09T03:59:34.741Z

Modified

2026-07-13T16:43:26.704373754Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator

Summary

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

Details

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.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-20",
        "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42301.json"
}

References

Affected packages

Git / github.com/befeleme/pyp2spec

Affected ranges

Type

GIT

Repo

https://github.com/befeleme/pyp2spec

Events

Introduced

Fixed

7801493cba96a6774f850460a1700465ead5418e

Database specific

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.14.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v0.*

v0.1.0

v0.10.0

v0.11.0

v0.11.1

v0.12.0

v0.12.1

v0.12.2

v0.13.0

v0.2.0

v0.3.0

v0.3.1

v0.3.2

v0.3.3

v0.4.0

v0.5.0

v0.6.0

v0.6.1

v0.7.0

v0.8.0

v0.9.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42301.json"