CVE-2026-87766
HIGH
NVD
CVSS Score
8.8
Severity
HIGH
Published
Sep 09, 2026
Vendor
unknown
Description
A flaw was found in bubblewrap. During sandbox setup, creating files or directories under the new root can follow a parent symlink onto the host via /oldroot, writing attacker-chosen paths outside the sandbox as the launching user. This happens before the sandboxed process starts. This issue is GHSA-pxhw-h44j-8pfx. It is fixed in bubblewrap 0.12.0.