UBUNTU-CVE-2026-87766

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Source
https://ubuntu.com/security/CVE-2026-87766
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87766.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-87766
Upstream
Downstream
Published
2026-09-09T09:17:00Z
Modified
2026-09-18T01:00:05Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in bubblewrap. During sandbox setup, creating files or directories under the new root can follow a parent symlink onto the host via /oldroot, writing attacker-chosen paths outside the sandbox as the launching user. This happens before the sandboxed process starts. This issue is GHSA-pxhw-h44j-8pfx. It is fixed in bubblewrap 0.12.0.

References

Affected packages

Ubuntu:Pro:18.04:LTS / bubblewrap

Package

Name
bubblewrap
Purl
pkg:deb/ubuntu/bubblewrap?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.2.0-1
0.2.0-2
0.2.0-4
0.2.1-1
0.2.1-1ubuntu0.1
0.2.1-1ubuntu0.1+esm2
0.2.1-1ubuntu0.1+esm3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bubblewrap",
            "binary_version":  "0.2.1-1ubuntu0.1+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87766.json"

Ubuntu:Pro:20.04:LTS / bubblewrap

Package

Name
bubblewrap
Purl
pkg:deb/ubuntu/bubblewrap?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.3.3-2
0.4.0-1
0.4.0-1ubuntu1
0.4.0-1ubuntu2
0.4.0-1ubuntu3
0.4.0-1ubuntu4
0.4.0-1ubuntu4.1
0.4.0-1ubuntu4.1+esm2
0.4.0-1ubuntu4.1+esm3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bubblewrap",
            "binary_version":  "0.4.0-1ubuntu4.1+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87766.json"

Ubuntu:22.04:LTS / bubblewrap

Package

Name
bubblewrap
Purl
pkg:deb/ubuntu/bubblewrap?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.4.1-3build1
0.5.0-1
0.6.0-1
0.6.1-1
0.6.1-1ubuntu0.1
0.6.1-1ubuntu0.2
0.6.1-1ubuntu0.3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bubblewrap",
            "binary_version":  "0.6.1-1ubuntu0.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87766.json"

Ubuntu:24.04:LTS / bubblewrap

Package

Name
bubblewrap
Purl
pkg:deb/ubuntu/bubblewrap?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.8.0-2
0.9.0-1build1
0.9.0-1ubuntu0.1
0.9.0-1ubuntu0.2
0.9.0-1ubuntu0.3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bubblewrap",
            "binary_version":  "0.9.0-1ubuntu0.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87766.json"

Ubuntu:26.04:LTS / bubblewrap

Package

Name
bubblewrap
Purl
pkg:deb/ubuntu/bubblewrap?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.11.0-2
0.11.0-2build1
0.11.1-1
0.11.1-1ubuntu0.1
0.11.1-1ubuntu0.2
0.11.1-1ubuntu0.3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bubblewrap",
            "binary_version":  "0.11.1-1ubuntu0.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87766.json"