CVE catalog
CVE-2026-87766
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
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.21% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | bubblewrap | sid | 0.13.1-1 | fixed |
| Debian | bubblewrap | forky | 0.13.1-1 | fixed |
| Debian | bubblewrap | trixie | 0.12.0-1~deb13u1 | fixed |
| Debian | bubblewrap | trixie-security | 0.12.0-1~deb13u1 | fixed |
| Debian | bubblewrap | bookworm | 0.8.0-2+deb12u1 | vulnerable |
| Debian | bubblewrap | bookworm-security | 0.8.0-2+deb12u1 | vulnerable |
| Ubuntu | bubblewrap | noble | 0.9.0-1ubuntu0.2 | fixed |
| Opensuse | flatpak | tumbleweed | 1.18.3-1.1 | fixed |
| Ubuntu | bubblewrap | pro | 0.3.3-2 | vulnerable |
| Ubuntu | bubblewrap | pro | 0.4.0-1 | vulnerable |
| Ubuntu | bubblewrap | pro | 0.4.0-1ubuntu1 | vulnerable |
| Ubuntu | bubblewrap | pro | 0.4.0-1ubuntu2 | vulnerable |
| Ubuntu | bubblewrap | pro | 0.4.0-1ubuntu3 | vulnerable |
| Ubuntu | bubblewrap | pro | 0.4.0-1ubuntu4 | vulnerable |
| Ubuntu | bubblewrap | pro | 0.4.0-1ubuntu4.1 | vulnerable |
| Ubuntu | bubblewrap | pro | 0.4.0-1ubuntu4.1+esm2 | vulnerable |
| Ubuntu | bubblewrap | pro | 0.4.0-1ubuntu4.1+esm3 | vulnerable |
| Ubuntu | bubblewrap | 22.04 | 0.4.1-3build1 | vulnerable |
| Ubuntu | bubblewrap | 22.04 | 0.5.0-1 | vulnerable |
| Ubuntu | bubblewrap | 22.04 | 0.6.0-1 | vulnerable |
| Ubuntu | bubblewrap | 22.04 | 0.6.1-1 | vulnerable |
| Ubuntu | bubblewrap | 22.04 | 0.6.1-1ubuntu0.1 | vulnerable |
| Ubuntu | bubblewrap | 22.04 | 0.6.1-1ubuntu0.2 | vulnerable |
| Ubuntu | bubblewrap | 22.04 | 0.6.1-1ubuntu0.3 | vulnerable |
| Ubuntu | bubblewrap | 24.04 | 0.8.0-2 | vulnerable |
| Ubuntu | bubblewrap | 24.04 | 0.9.0-1build1 | vulnerable |
| Ubuntu | bubblewrap | 24.04 | 0.9.0-1ubuntu0.1 | vulnerable |
| Ubuntu | bubblewrap | 24.04 | 0.9.0-1ubuntu0.2 | vulnerable |
| Ubuntu | bubblewrap | 24.04 | 0.9.0-1ubuntu0.3 | vulnerable |
| Ubuntu | bubblewrap | 26.04 | 0.11.0-2 | vulnerable |
| Ubuntu | bubblewrap | 26.04 | 0.11.0-2build1 | vulnerable |
| Ubuntu | bubblewrap | 26.04 | 0.11.1-1 | vulnerable |
| Ubuntu | bubblewrap | 26.04 | 0.11.1-1ubuntu0.1 | vulnerable |
| Ubuntu | bubblewrap | 26.04 | 0.11.1-1ubuntu0.2 | vulnerable |
| Ubuntu | bubblewrap | 26.04 | 0.11.1-1ubuntu0.3 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | bubblewrap | source | sid | 0.12.0-1 | not yet assigned | Not reported | [1145655] |
| Debian | bubblewrap | source | forky | 0.12.0-1 | not yet assigned | Not reported | [1145655] |
| Debian | bubblewrap | source | trixie | 0.12.0-1~deb13u1 | not yet assigned | Not reported | [1145655] |
| Debian | bubblewrap | source | bookworm | (unfixed) | not yet assigned | Not reported | [1145655] |
| Ubuntu | bubblewrap | deb | noble | 0.9.0-1ubuntu0.2 | Not reported | Not reported | Not reported |
| Opensuse | flatpak | rpm | tumbleweed | 1.18.3-1.1 | Not reported | OPENSUSE-SU-2026:11873-1 | Not reported |
Notes
[bookworm] bubblewrap: Intrusive backport due to a complete rewrite
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [bubblewrap]Affected
Details (4)
0.8.0-2+deb12u1· amd64 · bookwormAffected
nvd · bubblewrap · debian · bookworm; nvd · bubblewrap · debian · 12
0.8.0-2+deb12u1· arm64 · bookwormAffected
nvd · bubblewrap · debian · bookworm; nvd · bubblewrap · debian · 12
0.8.0-2+deb12u1· amd64 · bookworm-securityAffected
nvd · bubblewrap · debian · bookworm; nvd · bubblewrap · debian · 12
0.8.0-2+deb12u1· arm64 · bookworm-securityAffected
nvd · bubblewrap · debian · bookworm; nvd · bubblewrap · debian · 12
[Debian 13 (Trixie)]
- [bubblewrap]Affected
Details (4)
0.11.0-2+deb13u1· amd64 · trixieAffected · Fixed:
0.12.0-1~deb13u1nvd · bubblewrap · debian · 13
0.11.0-2+deb13u1· arm64 · trixieAffected · Fixed:
0.12.0-1~deb13u1nvd · bubblewrap · debian · 13
0.12.0-1~deb13u1· amd64 · trixie-securityFixed · Fixed:
0.12.0-1~deb13u1nvd · bubblewrap · debian · 13
0.12.0-1~deb13u1· arm64 · trixie-securityFixed · Fixed:
0.12.0-1~deb13u1nvd · bubblewrap · debian · 13
[openSUSE Tumbleweed]
- [flatpak]Affected
Source package: [flatpak]
Details (1)
1.18.2-1.1· x86_64 · tumbleweedAffected · Fixed:
1.18.3-1.1nvd · flatpak · opensuse · tumbleweed
- [flatpak-devel]Unknown
Source package: [flatpak]
Details (1)
1.18.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.18.3-1.1Version impact unknown
nvd · flatpak · opensuse · tumbleweed
- [flatpak-remote-flathub]Unknown
Source package: [flatpak]
Details (1)
1.18.2-1.1· noarch · tumbleweedUnknown · Fixed:
1.18.3-1.1Version impact unknown
nvd · flatpak · opensuse · tumbleweed
- [flatpak-selinux]Unknown
Source package: [flatpak]
Details (1)
1.18.2-1.1· noarch · tumbleweedUnknown · Fixed:
1.18.3-1.1Version impact unknown
nvd · flatpak · opensuse · tumbleweed
- [flatpak-zsh-completion]Unknown
Source package: [flatpak]
Details (1)
1.18.2-1.1· noarch · tumbleweedUnknown · Fixed:
1.18.3-1.1Version impact unknown
nvd · flatpak · opensuse · tumbleweed
- [libflatpak0]Unknown
Source package: [flatpak]
Details (1)
1.18.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.18.3-1.1Version impact unknown
nvd · flatpak · opensuse · tumbleweed
- [system-user-flatpak]Unknown
Source package: [flatpak]
Details (1)
1.18.2-1.1· noarch · tumbleweedUnknown · Fixed:
1.18.3-1.1Version impact unknown
nvd · flatpak · opensuse · tumbleweed
- [typelib-1_0-Flatpak-1_0]Unknown
Source package: [flatpak]
Details (1)
1.18.2-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.18.3-1.1Version impact unknown
nvd · flatpak · opensuse · tumbleweed
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11873-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-87766]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-87766]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-87766]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11873-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-87766]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87766.json]
- [https://ubuntu.com/security/notices/USN-8779-1]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]