Microsoft security update for CVE-2026-3087
🔗 CVE IDs covered (1)
📋 Microsoft's advisory
EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-3087. This page also shows what EchelonGraph holds for CVE-2026-3087, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.
🎯 Affected products6
- azl3 python3 3.12.9-10 on Azure Linux 3.0
- azl3 python3 3.12.9-11 on Azure Linux 3.0
- azl3 python3 3.12.9-13 on Azure Linux 3.0
- azl3 python3 3.12.9-14 on Azure Linux 3.0
- cbl2 python3 3.9.19-19 on CBL Mariner 2.0
- cbl2 python3 3.9.19-19 on CBL-Mariner 2.0
✅ Updates Microsoft lists: 2 updates
2 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.
| KB article | Update | Fixed build |
|---|---|---|
| — | Security Update | 3.12.9-14 |
| — | Security Update | — |
🧭 EchelonGraph on CVE-2026-3087
- EchelonGraph score
- 7.5 HIGH
- CISA KEV
- Not listed
- Fix status
- A fix is available — apply it.
Description from the CVE record (CVE.org), as published by its numbering authority
If `shutil.unpack_archive()` is given a ZIP archive with an absolute Windows path containing a drive (`C:\\...`) then the archive will be extracted outside the target directory which is different than other operating systems. Only Windows is affected by this vulnerability.
Published by Python Software Foundation, the CVE Numbering Authority that assigned CVE-2026-3087, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).