CVE-2026-87766

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.0 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-87766
https://bugs.debian.org/1145655
https://bugzilla.redhat.com/show_bug.cgi?id=2530542
https://github.com/containers/bubblewrap/releases/tag/v0.12.0
https://github.com/containers/bubblewrap/security/advisories/GHSA-pxhw-h44j-8pfx
https://www.openwall.com/lists/oss-security/2026/08/27/7
http://www.openwall.com/lists/oss-security/2026/09/09/3

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-09 09:17

Updated : 2026-09-09 17:17

NVD link : CVE-2026-87766

Mitre link : CVE-2026-87766

CVE.ORG link : CVE-2026-87766

JSON object : View

Products Affected

No product.

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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