CVE catalog
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 manifes
- Severity
- Medium · CVSS 6.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.19% · Oct 25, 2026
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.
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 | flatpak-builder | sid | 1.4.12-2 | fixed |
| Debian | flatpak-builder | forky | 1.4.12-2 | fixed |
| Debian | flatpak-builder | trixie | 1.4.4-2 | vulnerable |
| Debian | flatpak-builder | bookworm | 1.2.3-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | flatpak-builder | source | sid | 1.4.11-1 | not yet assigned | Not reported | [1147701] |
| Debian | flatpak-builder | source | forky | 1.4.11-1 | not yet assigned | Not reported | [1147701] |
| Debian | flatpak-builder | source | trixie | (unfixed) | not yet assigned | Not reported | [1147701] |
| Debian | flatpak-builder | source | bookworm | (unfixed) | not yet assigned | Not reported | [1147701] |
Notes
[trixie] flatpak-builder: Minor issue [bookworm] flatpak-builder: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [flatpak-builder]Affected
Details (4)
1.2.3-1· amd64 · bookwormAffected
nvd · flatpak-builder · debian · bookworm; nvd · flatpak-builder · debian · 12
1.2.3-1· arm64 · bookwormAffected
nvd · flatpak-builder · debian · bookworm; nvd · flatpak-builder · debian · 12
1.4.4-1~bpo12+1· amd64 · bookworm-backportsAffected
nvd · flatpak-builder · debian · bookworm; nvd · flatpak-builder · debian · 12
1.4.4-1~bpo12+1· arm64 · bookworm-backportsAffected
nvd · flatpak-builder · debian · bookworm; nvd · flatpak-builder · debian · 12
- [flatpak-builder-tests]Affected
Source package: [flatpak-builder]
Details (4)
1.2.3-1· amd64 · bookwormAffected
nvd · flatpak-builder · debian · bookworm; nvd · flatpak-builder · debian · 12
1.2.3-1· arm64 · bookwormAffected
nvd · flatpak-builder · debian · bookworm; nvd · flatpak-builder · debian · 12
1.4.4-1~bpo12+1· amd64 · bookworm-backportsAffected
nvd · flatpak-builder · debian · bookworm; nvd · flatpak-builder · debian · 12
1.4.4-1~bpo12+1· arm64 · bookworm-backportsAffected
nvd · flatpak-builder · debian · bookworm; nvd · flatpak-builder · debian · 12
[Debian 13 (Trixie)]
- [flatpak-builder]Affected
Details (2)
1.4.4-2· amd64 · trixieAffected
nvd · flatpak-builder · debian · 13
1.4.4-2· arm64 · trixieAffected
nvd · flatpak-builder · debian · 13
- [flatpak-builder-tests]Affected
Source package: [flatpak-builder]
Details (2)
1.4.4-2· amd64 · trixieAffected
nvd · flatpak-builder · debian · 13
1.4.4-2· arm64 · trixieAffected
nvd · flatpak-builder · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-107466]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-107466]
- [https://security-tracker.debian.org/tracker/CVE-2026-107466]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-107466.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]