HIGH 8.8 Microsoft
CVE-2026-87766
Bubblewrap: bubblewrap: symlink traversal via /oldroot allows writing files outside sandbox during setup
Microsoft Security Update 2026-Sep: Bubblewrap: bubblewrap: symlink traversal via /oldroot allows writing files outside sandbox during setup
Affected Products
- azl3 bubblewrap 0.8.0-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-87766
- https://nvd.nist.gov/vuln/detail/CVE-2026-87766
This high severity vulnerability with a CVSS score of 8.8 was published on 2026-09-08 via Microsoft. Affected: azl3 bubblewrap 0.8.0-1 on Azure Linux 3.0.
vulnfeed aggregates 18513 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.