ByteOS Network

NVD Vulnerability Details :

CVE-2026-34078

Undergoing Analysis

Source-security-advisories@github.com

Published At-07 Apr, 2026 | 22:16

Updated At-11 Apr, 2026 | 01:16

Flatpak is a Linux application sandboxing and distribution framework. Prior to 1.16.4, the Flatpak portal accepts paths in the sandbox-expose options which can be app-controlled symlinks pointing at arbitrary paths. Flatpak run mounts the resolved host path in the sandbox. This gives apps access to all host files and can be used as a primitive to gain code execution in the host context. This vulnerability is fixed in 1.16.4.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	4.0	9.3	CRITICAL	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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

Type: Secondary

Version: 4.0

Base score: 9.3

Base severity: CRITICAL

Vector:

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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

Weaknesses

CWE ID	Type	Source
CWE-61	Secondary	security-advisories@github.com

CWE ID: CWE-61

Type: Secondary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/flatpak/flatpak/security/advisories/GHSA-cc2q-qc34-jprg	security-advisories@github.com	N/A
http://www.openwall.com/lists/oss-security/2026/04/09/8	af854a3a-2127-422b-91ae-364da2661108	N/A
http://www.openwall.com/lists/oss-security/2026/04/10/14	af854a3a-2127-422b-91ae-364da2661108	N/A