Privilege escalation in Containers Crun
CVE-2026-30892
crun is an open source OCI Container Runtime fully written in C. In versions 1.19 through 1.26, the `crun exec` option `-u` (`--user`) is incorrectly parsed. The value `1` is interpreted as UID 0 and GID 0 when it should have been UID 1 a…
Vulnerability class: Privilege Escalation
EPSS: 0.000 (4.3th percentile) — read the EPSS interpretation.
Affected products
- Containers Crun — versions >= 1.19, < 1.27
Weakness classification (CWE)
References
- https://github.com/containers/crun/security/advisories/GHSA-4vg2-xjqj-7chj (x_refsource_CONFIRM)
- https://github.com/containers/crun/commit/1bd7f42446999b0e76bc3d575392e05c943b0b01 (x_refsource_MISC)
- https://github.com/containers/crun/releases/tag/1.27 (x_refsource_MISC)