DEBIAN-CVE-2026-86320

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Source
https://security-tracker.debian.org/tracker/CVE-2026-86320
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86320.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-86320
Upstream
  • CVE-2026-86320
Published
2026-09-17T08:17:02Z
Modified
2026-10-01T03:03:37Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in flatpak-builder where Git hooks are not disabled when applying patch sources with use-git-am: true. An attacker who can provide a malicious source containing a Git post-applypatch hook can cause the hook to execute on the host during the build process, resulting in arbitrary code execution with the privileges of the user running flatpak-builder.

References

Affected packages

Debian:12 / flatpak-builder

Package

Name
flatpak-builder
Purl
pkg:deb/debian/flatpak-builder?arch=source&distro=bookworm

Affected ranges

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

Affected versions

1.*
1.2.3-1
1.3.1-1
1.3.3-1
1.3.4-1
1.3.5-1
1.4.0-1
1.4.1-1
1.4.2-1
1.4.4-1~bpo12+1
1.4.4-1
1.4.4-2
1.4.5-1
1.4.6-1
1.4.6-2
1.4.7-1
1.4.8-1
1.4.9-1
1.4.10-1
1.4.11-1
1.4.12-1
1.4.12-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86320.json"

Debian:13 / flatpak-builder

Package

Name
flatpak-builder
Purl
pkg:deb/debian/flatpak-builder?arch=source&distro=trixie

Affected ranges

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

Affected versions

1.*
1.4.4-2
1.4.5-1
1.4.6-1
1.4.6-2
1.4.7-1
1.4.8-1
1.4.9-1
1.4.10-1
1.4.11-1
1.4.12-1
1.4.12-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86320.json"

Debian:14 / flatpak-builder

Package

Name
flatpak-builder
Purl
pkg:deb/debian/flatpak-builder?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.4.11-1

Affected versions

1.*
1.4.4-2
1.4.5-1
1.4.6-1
1.4.6-2
1.4.7-1
1.4.8-1
1.4.9-1
1.4.10-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-86320.json"