CVE-2026-30892CWE-269

Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation

published March 25, 2026

CVSS v3.1
0.0
EPSS
0%
Percentile
6.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
0.0 · NONE
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00177 · 6.9th percentile
Weakness
CWE-269 · Improper Privilege Management
Published
2026-03-25T23:57Z
EPSS history
Timeline
  • 25 MAR 23:57Z
    Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation
    cvelistv5