Improper Privilege Management Affecting bubblewrap package, versions <0.11.1-1ubuntu0.1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.27% (20th percentile)

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  • Snyk IDSNYK-UBUNTU2604-BUBBLEWRAP-16236206
  • published1 May 2026
  • disclosed9 May 2026

Introduced: 1 May 2026

CVE-2026-41163  (opens in a new tab)
CWE-269  (opens in a new tab)

How to fix?

Upgrade Ubuntu:26.04 bubblewrap to version 0.11.1-1ubuntu0.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bubblewrap package and not the bubblewrap package as distributed by Ubuntu. See How to fix? for Ubuntu:26.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1