High severity · published Mar 25, 2026
CVE-2026-30892
Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
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 and GID 0. The process thus runs with higher privileges than expected. Version 1.27 patches the issue.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CR
crun · containers
>= 1.19, < 1.27 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-30892
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-30892
Patch
https://github.com/containers/crun/commit/1bd7f42446999b0e76bc3d575392e05c943b0b01
Product
https://github.com/containers/crun/releases/tag/1.27
Exploit
https://github.com/containers/crun/security/advisories/GHSA-4vg2-xjqj-7chj
More from crun
5.6
CVE-2026-88264
Crun: crun: /dev/console symlink follow allows root-owned file creation outside the rootfs
5.1
CVE-2026-47766
crun follows rootfs /dev symlink while creating default devices