CVE-2026-92162
Flatpak vulnerable to path traversal via unvalidated "arch" parameter in DeployAppstream
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Prior to version 1.18.1, on systems where at least one OCI remote is configured (most common on Fedora systems), a malicious local user in an active local session could use a crafted architecture name to trick the `flatpak-system-helper` process into creating a root-owned directory tree with contents determined by the OCI remote, plus a root-owned `lock` file and `icons` directory, outside the intended root directory. If this vulnerability is combined with other vulnerabilities also fixed in 1.18.1, the combination can lead to local root privilege escalation. This particular vulnerability is not believed to be exploitable if there are no OCI remotes configured (common on non-Fedora systems). Version 1.18.1 patches the issue.
| CWE | CWE-22 |
| Vendor | flatpak |
| Product | flatpak |
| Published | Oct 20, 2026 |
| Last Updated | Oct 20, 2026 |
Get instant alerts for flatpak flatpak
Be the first to know when new unknown vulnerabilities affecting flatpak flatpak are published — delivered to Slack, Telegram or Discord.