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CVE-2026-41163

bubblewrap vulnerable to privilege escalation in setuid mode via ptrace

8.7 HighFix available

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 profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

0.27%Up 0.2 points since May 9, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.7

bubblewrap vulnerable to privilege escalation in setuid mode via ptrace

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.

Record
CVE-2026-41163
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
7.0 HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-269, CWE-269
Updated
2026-11-02
EUVDEUVD-2026-28884 8.7

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.

Record
EUVD-2026-28884
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Updated
2026-11-02
NVD 8.7

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.

Record
CVE-2026-41163
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
7.0 HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-269
Updated
2026-11-02
OSVALPINE-CVE-2026-41163 8.7

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.

Record
ALPINE-CVE-2026-41163
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVBELL-CVE-2026-41163 7.0

CVE-2026-41163 does not affect BellSoft software

Record
BELL-CVE-2026-41163
CVSS 3.1
7.0 HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSV 8.7

bubblewrap vulnerable to privilege escalation in setuid mode via ptrace

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.

Record
CVE-2026-41163
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-269
Updated
2026-11-02
Show 8 moreShow less
OSVDEBIAN-CVE-2026-41163 8.7

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.

Record
DEBIAN-CVE-2026-41163
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVRHSA-2026:60368 7.0

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Record
RHSA-2026:60368
CVSS 3.1
7.0 HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-41163 8.7

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.

Record
UBUNTU-CVE-2026-41163
CVSS 4.0
8.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
7.0 HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2026:10671-1 No score

bubblewrap-0.11.2-1.1 on GA media

These are all security issues fixed in the bubblewrap-0.11.2-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:10671-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:20811-1 No score

Security update for bubblewrap

This update for bubblewrap fixes the following issue

  • CVE-2026-41163: improper process attachment via ptrace can lead to arbitrary privileged operations and local root escalation (bsc#1263113).
Record
openSUSE-SU-2026:20811-1
Updated
2026-11-02
OSVSUSE-SU-2026:2094-1 No score

Security update for bubblewrap

This update for bubblewrap fixes the following issue

  • CVE-2026-41163: improper process attachment via ptrace can lead to arbitrary privileged operations and local root escalation (bsc#1263113).
Record
SUSE-SU-2026:2094-1
Updated
2026-11-02
OSVSUSE-SU-2026:21847-1 No score

Security update for bubblewrap

This update for bubblewrap fixes the following issue

  • CVE-2026-41163: improper process attachment via ptrace can lead to arbitrary privileged operations and local root escalation (bsc#1263113).
Record
SUSE-SU-2026:21847-1
Updated
2026-11-02
OSVUSN-8288-1 No score

bubblewrap vulnerability

It was discovered that Bubblewrap incorrectly handled the sandbox setup phase when installed in setuid mode. A local attacker could possibly use this issue to bypass sandbox restrictions.

Record
USN-8288-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
bubblewrap
Debian:13
 before 0.11.0-2+deb13u1, plus listed versions
0.11.0-2
0.11.0-2+deb13u1
bubblewrap
Debian:14
 before 0.11.2-1, plus listed versions
0.11.0-20.11.1-1
0.11.2-1
bubblewrap
Red Hat:hummingbird:1
 before 0:0.12.0-1.hum1
0:0.12.0-1.hum1
bubblewrap
Ubuntu:25.10
 before 0.11.0-2ubuntu0.1, plus listed versions
0.11.0-2
0.11.0-2ubuntu0.1
bubblewrap
Ubuntu:26.04:LTS
 before 0.11.1-1ubuntu0.1, plus listed versions
0.11.0-20.11.0-2build10.11.1-1
0.11.1-1ubuntu0.1
bubblewrap
openSUSE:Tumbleweed
 before 0.11.2-1.1
0.11.2-1.1

History

History
RecordedChangedSources
affected
first indexedCVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-41163 is a high vulnerability (CVSS 8.7) in Containers Bubblewrap, published May 4, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. Fixed in bubblewrap 0.11.0-2+deb13u1.

References

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