CVE-2026-41163: CWE-269: Improper Privilege Management in containers bubblewrap
CVE-2026-41163 is a high-severity vulnerability in the bubblewrap sandboxing tool versions 0. 11. 0 up to but not including 0. 11. 2. When bubblewrap is installed with setuid mode, an attacker can use ptrace to attach to the bubblewrap process and manipulate the unprivileged sandbox setup phase. This allows arbitrary use of privileged operations, including creating overlay mounts that should be restricted. The issue has been fixed in bubblewrap version 0. 11. 2.
AI Analysis
Technical Summary
The vulnerability in bubblewrap (versions >=0.11.0 and <0.11.2) arises from improper privilege management (CWE-269) when installed in setuid mode. An attacker can exploit ptrace to control the unprivileged portion of the sandbox setup, enabling unauthorized privileged operations such as overlay mounts. This bypasses intended restrictions in the setuid bubblewrap binary. The flaw was addressed and patched in version 0.11.2.
Potential Impact
Successful exploitation allows an unprivileged user to perform privileged operations within the bubblewrap sandbox environment, specifically enabling overlay mounts that are normally disallowed. This could lead to unauthorized privilege escalation or sandbox escape scenarios. The CVSS 4.0 base score is 8.7 (high severity), indicating a significant security impact without requiring user interaction or privileges.
Mitigation Recommendations
Upgrade bubblewrap to version 0.11.2 or later, where this vulnerability is patched. Since the vendor advisory confirms the fix in 0.11.2, applying this official update fully mitigates the issue. No additional mitigations are indicated or required beyond updating to the fixed version.
CVE-2026-41163: CWE-269: Improper Privilege Management in containers bubblewrap
Description
CVE-2026-41163 is a high-severity vulnerability in the bubblewrap sandboxing tool versions 0. 11. 0 up to but not including 0. 11. 2. When bubblewrap is installed with setuid mode, an attacker can use ptrace to attach to the bubblewrap process and manipulate the unprivileged sandbox setup phase. This allows arbitrary use of privileged operations, including creating overlay mounts that should be restricted. The issue has been fixed in bubblewrap version 0. 11. 2.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in bubblewrap (versions >=0.11.0 and <0.11.2) arises from improper privilege management (CWE-269) when installed in setuid mode. An attacker can exploit ptrace to control the unprivileged portion of the sandbox setup, enabling unauthorized privileged operations such as overlay mounts. This bypasses intended restrictions in the setuid bubblewrap binary. The flaw was addressed and patched in version 0.11.2.
Potential Impact
Successful exploitation allows an unprivileged user to perform privileged operations within the bubblewrap sandbox environment, specifically enabling overlay mounts that are normally disallowed. This could lead to unauthorized privilege escalation or sandbox escape scenarios. The CVSS 4.0 base score is 8.7 (high severity), indicating a significant security impact without requiring user interaction or privileges.
Mitigation Recommendations
Upgrade bubblewrap to version 0.11.2 or later, where this vulnerability is patched. Since the vendor advisory confirms the fix in 0.11.2, applying this official update fully mitigates the issue. No additional mitigations are indicated or required beyond updating to the fixed version.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-17T16:34:45.525Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69ffe1afcbff5d8610eac9e5
Added to database: 5/10/2026, 1:38:55 AM
Last enriched: 5/10/2026, 1:39:13 AM
Last updated: 5/10/2026, 5:47:49 AM
Views: 4
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