Upstream information

CVE-2026-39977 at MITRE

Description

flatpak-builder is a tool to build flatpaks from source. From 1.4.5 to before 1.4.8, the license-files manifest key takes an array of paths to user defined licence files relative to the source directory of the module. The paths from that array are resolved using g_file_resolve_relative_path() and validated to stay inside the source directory using two checks - g_file_get_relative_path() which does not resolve symlinks and g_file_query_file_type() with G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS which only applies to the final path component. The copy operation runs on host. This can be exploited by using a crafted manifest and/or source to read arbitrary files from the host and capture them into the build output. This vulnerability is fixed in 1.4.8.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail SUSE
Base Score 6.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
CVSSv3 Version 3.1
CVSS v4 Scores
CVSS detail CNA (GitHub) SUSE
Base Score 7.1 7.1
Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Attack Vector Network Network
Attack Complexity Low Low
Attack Requirements None None
Privileges Required None None
User Interaction Passive Passive
Vulnerable System Confidentiality Impact High High
Vulnerable System Integrity Impact None None
Vulnerable System Availability Impact None None
Subsequent System Confidentiality Impact None None
Subsequent System Integrity Impact None None
Subsequent System Availability Impact None None
CVSSv4 Version 4.0 4.0
SUSE Bugzilla entry: 1261916 [NEW]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP7 flatpak-builder Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP7 flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP7 flatpak-builder Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 flatpak-builder Not affected
openSUSE Leap 15.6 flatpak-builder Not affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4 flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5 flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS flatpak-builder Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP4 flatpak-builder Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP5 flatpak-builder Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP6 flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP4 flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP4-LTSS flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP5 flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP5-LTSS flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP6 flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP6-LTSS flatpak-builder Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 flatpak-builder Not affected
SUSE Manager Proxy 4.3 flatpak-builder Not affected
SUSE Manager Retail Branch Server 4.3 flatpak-builder Not affected
SUSE Manager Server 4.3 flatpak-builder Not affected
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 flatpak-builder Not affected
SUSE Enterprise Storage 6 flatpak-builder Not affected
SUSE Enterprise Storage 7 flatpak-builder Not affected
SUSE Enterprise Storage 7.1 flatpak-builder Not affected
SUSE Linux Enterprise Desktop 15 SP1 flatpak-builder Not affected
SUSE Linux Enterprise Desktop 15 SP2 flatpak-builder Not affected
SUSE Linux Enterprise Desktop 15 SP3 flatpak-builder Not affected
SUSE Linux Enterprise Desktop 15 SP4 flatpak-builder Not affected
SUSE Linux Enterprise Desktop 15 SP5 flatpak-builder Not affected
SUSE Linux Enterprise Desktop 15 SP6 flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3 flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS flatpak-builder Not affected
SUSE Linux Enterprise High Performance Computing 15 SP6 flatpak-builder Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP1 flatpak-builder Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP2 flatpak-builder Not affected
SUSE Linux Enterprise Module for Development Tools 15 SP3 flatpak-builder Not affected
SUSE Linux Enterprise Real Time 15 SP2 flatpak-builder Not affected
SUSE Linux Enterprise Real Time 15 SP3 flatpak-builder Not affected
SUSE Linux Enterprise Real Time 15 SP4 flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP1 flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP1-BCL flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP2 flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP2-BCL flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP3 flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP3-BCL flatpak-builder Not affected
SUSE Linux Enterprise Server 15 SP3-LTSS flatpak-builder Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 flatpak-builder Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 flatpak-builder Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 flatpak-builder Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 flatpak-builder Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 flatpak-builder Not affected
SUSE Manager Proxy 4.0 flatpak-builder Not affected
SUSE Manager Proxy 4.1 flatpak-builder Not affected
SUSE Manager Proxy 4.2 flatpak-builder Not affected
SUSE Manager Retail Branch Server 4.0 flatpak-builder Not affected
SUSE Manager Retail Branch Server 4.1 flatpak-builder Not affected
SUSE Manager Retail Branch Server 4.2 flatpak-builder Not affected
SUSE Manager Server 4.0 flatpak-builder Not affected
SUSE Manager Server 4.1 flatpak-builder Not affected
SUSE Manager Server 4.2 flatpak-builder Not affected
openSUSE Leap 15.3 flatpak-builder Not affected
openSUSE Leap 15.4 flatpak-builder Not affected
openSUSE Leap 15.5 flatpak-builder Not affected


SUSE Timeline for this CVE

CVE page created: Fri Apr 10 00:09:45 2026
CVE page last modified: Fri Apr 10 19:52:29 2026