CVE-2026-30892: crun is an open source OCI Container Runtime fully written in C

Routine

NONE 0.0UPGRADE

CVE-2026-30892 is a none-severity flaw (CVSS 0.0) affecting crun. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	0.0 (None)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Weakness	CWE-269
Published	2026-03-26
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: crun project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-26 00:16 UTCPublished CVE record published
2026-06-17 10:33 UTCUpdated Record last modified

crun project crun UPGRADE

Affected: >= 1.19 and < 1.27

Fixed in: 1.27

Safe to downgrade to: a release before 1.19

1. Check installed version

apt-cache policy crun || rpm -q crun || crun --version

2. UPGRADE to 1.27 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade crun

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade crun

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.19 (Debian / Ubuntu)

apt-cache madison crun sudo apt install crun=<VERSION_BEFORE_1.19> sudo apt-mark hold crun

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list crun sudo dnf downgrade crun-<VERSION_BEFORE_1.19> sudo dnf versionlock add crun

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-30892?

crun: upgrade to 1.27. Exact commands for each OS are on this page.

Is CVE-2026-30892 being exploited?

CVE-2026-30892 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-30892 affect?

CVE-2026-30892 affects crun. Severity is none (CVSS 0.0). 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 an

How urgent is CVE-2026-30892?

Priority 6/100. Public exploit reference

References

← Back to latest CVEs