CVE-2026-15226 Affecting snapd package, versions <2.67.1+20.04ubuntu1~esm3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UBUNTU2004-SNAPD-18068910
- published21 Jul 2026
- disclosed21 Jul 2026
Introduced: 21 Jul 2026
NewCVE-2026-15226 (opens in a new tab)How to fix?
Upgrade Ubuntu:20.04 snapd to version 2.67.1+20.04ubuntu1~esm3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream snapd package and not the snapd package as distributed by Ubuntu.
See How to fix? for Ubuntu:20.04 relevant fixed versions and status.
A sandbox confinement bypass vulnerability exists in Canonical snapd within its internal execution environment compiler (snap-confine). The default seccomp security templates generated by the engine to restrict system calls do not filter or reject process operations capable of creating or manipulating file execution flags with set-user-ID attributes. Consequently, an application running within a strictly confined snap environment can successfully compile or drop binaries and apply setuid properties to them. If a compromised or malicious process inside the snap sandbox executes these generated setuid binaries, it can potentially circumvent architectural sandboxing assumptions, drop intended restriction policies, or execute privileged actions inside the container namespace that should otherwise be strictly blocked. The vulnerability has been resolved by hardening the seccomp template engine to block the execution and creation of setuid executables by sandboxed snap processes.