CVE-2026-41163
bubblewrap vulnerable to privilege escalation in setuid mode via ptrace
- State
- Published
- Severity
- 8.7 High
- Published
- May 9, 2026
- Updated
- Sep 1, 2026
- Reserved
- Apr 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | GitHub_M |
| 3.1 | 7.0 High | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat-SADP |
Weaknesses
- CWE-269 Improper Privilege Management
Affected Products
| Product | Versions |
|---|---|
bubblewrapcontainers |
|
References
- https://github.com/containers/bubblewrap/security/advisories/GHSA-xq78-7hw4-5jvp
- https://github.com/containers/bubblewrap/releases/tag/v0.11.2
- https://access.redhat.com/security/cve/CVE-2026-41163vdb-entry
- RHBZ#2468439issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41163.json
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