vm2: NodeVM `require.external` without an explicit `require.root` grants unrestricted host filesystem access and full RCE

Summary NodeVM's require.external option lets sandboxed code require local files and npm packages. When require.external is enabled and require.root is not explicitly set to a path that excludes nodemodules, two defaults combine to fully defeat the sandbox: - require.root defaults to unrestricted...

Astra Linux – Vulnerability in docker.io

In Docker versions prior to 9.03.15 and 20.10.3, there is a vulnerability related to the --userns-remap option. This option allows access to the remapped root directory, enabling privilege escalation to the actual root directory. When using --userns-remap, if the root user in the remapped namespa...

GHSA-HF8H-97GM-4X2P SiYuan: getUniqueFilename passes an unvalidated client-supplied path to the filesystem, giving anonymous readers an existence oracle over the entire host filesystem

Summary /api/file/getUniqueFilename takes a path from the request body and passes it to a filesystem existence check with no validation, confinement or authorization. The response distinguishes paths that exist from paths that do not, so an anonymous reader in publish mode can probe arbitrary...

GHSA-6RH5-QQ4Q-97XH vm2: NodeVM builtin denylist bypass via fs/promises despite -fs, allowing host filesystem writes

Summary NodeVM's builtin wildcard policy can allow sandboxed code to access fs/promises even when the embedder denies fs. With the following configuration: js require: builtin: '', '-fs', '-childprocess' require'fs' and require'childprocess' are blocked, but require'fs/promises' and...

Rocky Linux 9.6 [TuxCare] Security Update: podman / podman-docker / podman-plugins / podman-remote / etc (ALMALINUX9.6:CLSA-2026:1782987821)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1782987821 advisory. - Podman is a tool for managing OCI containers and pods. From 3.0.0 until 5.7.1, running a malicious container image where the WORKDIR path...

AlmaLinux 9.2 [TuxCare] Security Update: flatpak / flatpak-devel / flatpak-libs / flatpak-selinux / etc (ALMALINUX9.2:CLSA-2026:1789979782)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1789979782 advisory. - In Flatpak before 1.18.1, a malicious sandboxed app can obtain arbitrary read and write access to files on the host, which can be escalated...

Rocky Linux 9.6 [TuxCare] Security Update: runc (ALMALINUX9.6:CLSA-2026:1783518302)

The Rocky Linux 9.6 host has a package installed that is affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1783518302 advisory. - runc is a CLI tool for spawning and running containers according to the OCI specification. In versions prior to 1.3.6, 1.4.0-rc.1,...

CLEANSTART-2024-XJ51471 flaw was found in Buildah (and subsequently Podman Build) which allows containers to mount arbitrary locations on the host filesystem into build containers

Security vulnerability affects the buildah package. A flaw was found in Buildah and subsequently Podman Build which allows containers to mount arbitrary locations on the host filesystem into build containers...

AlmaLinux 9.2 [TuxCare] Security Update: buildah / buildah-tests Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1746188134)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1746188134 advisory. - A flaw was found in Buildah and subsequently Podman Build which allows containers to mount arbitrary locations on the host...

AlmaLinux 9.2 [TuxCare] Security Update: podman / podman-docker / podman-gvproxy / podman-plugins / etc (ALMALINUX9.2:CLSA-2026:1782985538)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1782985538 advisory. - Podman is a tool for managing OCI containers and pods. From 3.0.0 until 5.7.1, running a malicious container image where the WORKDIR path...

CVE-2026-85526

Path traversal in the Btrfs storage driver unpackVolume in Canonical LXD on Linux allows an authenticated user with instance creation privileges to delete or replace arbitrary files and directories on the host filesystem as root via a crafted subvolumes.path entry in backup/optimizedheader.yaml...

UBUNTU-CVE-2026-85526

Path traversal in the Btrfs storage driver unpackVolume in Canonical LXD on Linux allows an authenticated user with instance creation privileges to delete or replace arbitrary files and directories on the host filesystem as root via a crafted subvolumes.path entry in backup/optimizedheader.yaml...

CVE-2026-85526: Improper Limitation of a Pathname to a Restricted Directory

Path traversal in the Btrfs storage driver unpackVolume in Canonical LXD on Linux allows an authenticated user with instance creation privileges to delete or replace arbitrary files and directories on the host filesystem as root via a crafted subvolumes.path entry in backup/optimizedheader.yaml...

CVE-2026-96282

A malicious Flatpak extension can probe the host filesystem to determine what files and directories exist at arbitrary paths, and host directory listings can be disclosed to sandboxed applications using the extension. Additionally, unvalidated extension metadata can cause extension content to be...

DEBIAN-CVE-2026-96282

A malicious Flatpak extension can probe the host filesystem to determine what files and directories exist at arbitrary paths, and host directory listings can be disclosed to sandboxed applications using the extension. Additionally, unvalidated extension metadata can cause extension content to be...

CVE-2026-96282

A malicious Flatpak extension can probe the host filesystem to determine what files and directories exist at arbitrary paths, and host directory listings can be disclosed to sandboxed applications using the extension. Additionally, unvalidated extension metadata can cause extension content to be...

UBUNTU-CVE-2026-96282

A malicious Flatpak extension can probe the host filesystem to determine what files and directories exist at arbitrary paths, and host directory listings can be disclosed to sandboxed applications using the extension. Additionally, unvalidated extension metadata can cause extension content to be...

CVE-2026-96282

The Flatpak software is vulnerable to a file existence oracle and path traversal via extension metadata. A malicious Flatpak extension can probe the host filesystem to identify existing files and directories at arbitrary paths, potentially disclosing host directory listings to sandboxed applicati...

CVE-2026-96282 Flatpak: flatpak: extension metadata path traversal file existence oracle

A malicious Flatpak extension can probe the host filesystem to determine what files and directories exist at arbitrary paths, and host directory listings can be disclosed to sandboxed applications using the extension. Additionally, unvalidated extension metadata can cause extension content to be...

CVE-2026-96282 Flatpak: flatpak: extension metadata path traversal file existence oracle

A malicious Flatpak extension can probe the host filesystem to determine what files and directories exist at arbitrary paths, and host directory listings can be disclosed to sandboxed applications using the extension. Additionally, unvalidated extension metadata can cause extension content to be...