CVE-2026-107466
Flatpak-builder: local file exfiltration via `file
A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information disclosure by convincing a user or continuous integration (CI) system to process a crafted build manifest. By specifying local file Uniform Resource Identifiers (URIs) within source download definitions, the builder bypasses directory confinement checks. As a result, sensitive host files accessible to the build process can be read and incorporated into the build artifacts.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Flatpak-builder: local file exfiltration via `file
A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information disclosure by convincing a user or continuous integration (CI) system to process a crafted build manifest. By specifying local file Uniform Resource Identifiers (URIs) within source download definitions, the builder bypasses directory confinement checks. As a result, sensitive host files accessible to the build process can be read and incorporated into the build artifacts.
- Record
CVE-2026-107466- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N - Weakness
- CWE-22
- Updated
- 2026-11-05
EUVDEUVD-2026-94800
A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information disclosure by convincing a user or continuous integration (CI) system to process a crafted build manifest. By specifying local file Uniform Resource Identifiers (URIs) within source download definitions, the builder bypasses directory confinement checks. As a result, sensitive host files accessible to the build process can be read and incorporated into the build artifacts.
- Record
EUVD-2026-94800- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N - Updated
- 2026-11-05
GitHub AdvisoriesGHSA-m6mj-r236-h4v7
A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information...
A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information disclosure by convincing a user or continuous integration (CI) system to process a crafted build manifest. By specifying local file Uniform Resource Identifiers (URIs) within source download definitions, the builder bypasses directory confinement checks. As a result, sensitive host files accessible to the build process can be read and incorporated into the build artifacts.
- Record
GHSA-m6mj-r236-h4v7- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N - Weakness
- CWE-22
- Updated
- 2026-11-02
NVD
A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information disclosure by convincing a user or continuous integration (CI) system to process a crafted build manifest. By specifying local file Uniform Resource Identifiers (URIs) within source download definitions, the builder bypasses directory confinement checks. As a result, sensitive host files accessible to the build process can be read and incorporated into the build artifacts.
- Record
CVE-2026-107466- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N - Weakness
- CWE-22
- Updated
- 2026-11-05
OSVDEBIAN-CVE-2026-107466
A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information disclosure by convincing a user or continuous integration (CI) system to process a crafted build manifest. By specifying local file Uniform Resource Identifiers (URIs) within source download definitions, the builder bypasses directory confinement checks. As a result, sensitive host files accessible to the build process can be read and incorporated into the build artifacts.
- Record
DEBIAN-CVE-2026-107466- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-107466
A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information disclosure by convincing a user or continuous integration (CI) system to process a crafted build manifest. By specifying local file Uniform Resource Identifiers (URIs) within source download definitions, the builder bypasses directory confinement checks. As a result, sensitive host files accessible to the build process can be read and incorporated into the build artifacts.
- Record
UBUNTU-CVE-2026-107466- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
flatpak-builderDebian:12 |
All versions, plus listed versions 1.2.3-11.3.1-11.3.3-11.3.4-11.3.5-1 Show 16 moreShow less1.4.0-11.4.1-11.4.10-11.4.11-11.4.12-11.4.12-21.4.2-11.4.4-11.4.4-1~bpo12+11.4.4-21.4.5-11.4.6-11.4.6-21.4.7-11.4.8-11.4.9-1 |
None known |
flatpak-builderDebian:13 |
All versions, plus listed versions 1.4.10-11.4.11-11.4.12-11.4.12-21.4.4-2 Show 6 moreShow less1.4.5-11.4.6-11.4.6-21.4.7-11.4.8-11.4.9-1 |
None known |
flatpak-builderDebian:14 |
before 1.4.11-1, plus listed versions 1.4.10-11.4.4-21.4.5-11.4.6-11.4.6-21.4.7-11.4.8-11.4.9-1 |
1.4.11-1 |
flatpak-builderUbuntu:18.04:LTS |
All versions, plus listed versions 0.10.1-10.10.4-10.10.5-10.10.6-10.10.6-2 Show 4 moreShow less0.10.7-10.10.8-10.10.9-10.10.9-1ubuntu1 |
None known |
flatpak-builderUbuntu:20.04:LTS |
All versions, plus listed versions 1.0.8-21.0.9-11.0.10-1 |
None known |
flatpak-builderUbuntu:22.04:LTS |
All versions, plus listed versions 1.0.14-21.2.0-11.2.1-11.2.2-11.2.2-2 |
None known |
flatpak-builderUbuntu:24.04:LTS |
All versions, plus listed versions 1.2.3-11.4.0-11.4.1-11.4.2-1build11.4.2-1build2 |
None known |
flatpak-builderUbuntu:26.10 |
All versions, plus listed versions 1.4.8-11.4.9-11.4.10-11.4.11-11.4.12-1 |
None known |
flatpak-builderUbuntu:26.04:LTS |
All versions, plus listed versions 1.4.6-21.4.7-11.4.8-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | CVE List | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-107466 is a medium vulnerability (CVSS 6.1) in Red Hat Enterprise Linux 10, published October 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.19%, the 8th percentile. Fixed in flatpak-builder 1.4.11-1.