Amazon Linux 2 Security Advisory: ALAS2-2026-3261
Advisory Released Date: 2026-04-30
Advisory Updated Date: 2026-04-30
Severity:
Important
Issue Overview:
A complete sandbox escape vulnerability exists in Flatpak before 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, giving apps access to all host files and enabling code execution in the host context. (CVE-2026-34078)
Affected Packages:
flatpak
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update flatpak or yum update --advisory ALAS2-2026-3261 to update your system.
New Packages:
aarch64:
flatpak-1.0.9-10.amzn2.0.7.aarch64
flatpak-builder-1.0.0-10.amzn2.0.7.aarch64
flatpak-devel-1.0.9-10.amzn2.0.7.aarch64
flatpak-libs-1.0.9-10.amzn2.0.7.aarch64
flatpak-debuginfo-1.0.9-10.amzn2.0.7.aarch64
i686:
flatpak-1.0.9-10.amzn2.0.7.i686
flatpak-builder-1.0.0-10.amzn2.0.7.i686
flatpak-devel-1.0.9-10.amzn2.0.7.i686
flatpak-libs-1.0.9-10.amzn2.0.7.i686
flatpak-debuginfo-1.0.9-10.amzn2.0.7.i686
src:
flatpak-1.0.9-10.amzn2.0.7.src
x86_64:
flatpak-1.0.9-10.amzn2.0.7.x86_64
flatpak-builder-1.0.0-10.amzn2.0.7.x86_64
flatpak-devel-1.0.9-10.amzn2.0.7.x86_64
flatpak-libs-1.0.9-10.amzn2.0.7.x86_64
flatpak-debuginfo-1.0.9-10.amzn2.0.7.x86_64