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CVE-2026-42301

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a230cfead4c77fcec083726533fcef92de09852fca46f8cf60b5db3122d9eaf4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:75f538e88bec2678c9990d45562eccc8c30fbd9712c4edd3f10ff90352534869 · sha256:76e887ce481844c6… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:75f538e88bec2678c9990d45562eccc8c30fbd9712c4edd3f10ff90352534869 · sha256:76e887ce481844c6… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"pyp2spec","vendor":"befeleme","versions":[{"status":"affected","version":"< 0.14.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:75f538e88bec2678c9990d45562eccc8c30fbd9712c4edd3f10ff90352534869 · sha256:76e887ce481844c6… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:75f538e88bec2678c9990d45562eccc8c30fbd9712c4edd3f10ff90352534869 · sha256:76e887ce481844c6… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:75f538e88bec2678c9990d45562eccc8c30fbd9712c4edd3f10ff90352534869 · sha256:76e887ce481844c6… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:75f538e88bec2678c9990d45562eccc8c30fbd9712c4edd3f10ff90352534869 · sha256:76e887ce481844c6… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/befeleme/pyp2spec/releases/tag/v0.14.1","tags":["x_refsource_MISC"],"url":"https://github.com/befeleme/pyp2spec/releases/tag/v0.14.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:75f538e88bec2678c9990d45562eccc8c30fbd9712c4edd3f10ff90352534869 · sha256:76e887ce481844c6… · /containers/cna/references/1
{"name":"https://github.com/befeleme/pyp2spec/security/advisories/GHSA-r35x-v8p8-xvhw","tags":["x_refsource_CONFIRM"],"url":"https://github.com/befeleme/pyp2spec/security/advisories/GHSA-r35x-v8p8-xvhw"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:75f538e88bec2678c9990d45562eccc8c30fbd9712c4edd3f10ff90352534869 · sha256:76e887ce481844c6… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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