bubblewrap is a low-level unprivileged sandboxing tool. From version 0.11.0 to before version 0.11.2, if bubblewrap is installed in setuid mode then the user can use ptrace to attach to bubblewrap and control the unprivileged part of the sandbox setup phase. This allows the attacker to arbitrarily use the privileged operations, and in particular the "overlay mount" operation, allowing the creation of overlay mounts which is otherwise not allowed in the setuid version of bubblewrap. This issue has been patched in version 0.11.2.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
containers bubblewrap affected
Version Status Constraints
>= 0.11.0, < 0.11.2 affected —

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/containers/bubblewrap/releases/tag/v0.11.2 cve-icon cve-icon
https://github.com/containers/bubblewrap/security/advisories/GHSA-xq78-7hw4-5jvp cve-icon cve-icon
History

Sat, 09 May 2026 04:15:00 +0000

Type Values Removed Values Added
Description bubblewrap is a low-level unprivileged sandboxing tool. From version 0.11.0 to before version 0.11.2, if bubblewrap is installed in setuid mode then the user can use ptrace to attach to bubblewrap and control the unprivileged part of the sandbox setup phase. This allows the attacker to arbitrarily use the privileged operations, and in particular the "overlay mount" operation, allowing the creation of overlay mounts which is otherwise not allowed in the setuid version of bubblewrap. This issue has been patched in version 0.11.2.
Title bubblewrap vulnerable to privilege escalation in setuid mode via ptrace
Weaknesses CWE-269
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-09T03:56:51.833Z

Reserved: 2026-04-17T16:34:45.525Z

Link: CVE-2026-41163

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-09T04:16:21.167

Modified: 2026-05-09T04:16:21.167

Link: CVE-2026-41163

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-09T05:30:16Z

Weaknesses