CVE-2021-3101: Hotdog, prior to v1.0.1, did not mimic the capabilities or the SELinux label of the target JVM process

Q: How do I fix CVE-2021-3101?

hotdog: upgrade to 1.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-3101 being exploited?

CVE-2021-3101 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-3101 affect?

CVE-2021-3101 affects hotdog. Severity is high (CVSS 8.8). Hotdog, prior to v1.0.1, did not mimic the capabilities or the SELinux label of the target JVM process. This would allow a container to gain full privileges on the host, bypassing restrictions set on the container.

Q: How urgent is CVE-2021-3101?

Priority 49/100. High severity; Public exploit reference; On your watchlist

This month

HIGH 8.8WATCHLISTUPGRADE

CVE-2021-3101 is a high-severity flaw (CVSS 8.8) affecting hotdog. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Hotdog, prior to v1.0.1, did not mimic the capabilities or the SELinux label of the target JVM process. This would allow a container to gain full privileges on the host, bypassing restrictions set on the container.

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-250, CWE-269
Published	2022-04-19
Last modified	2026-06-17

Publisher (CNA): Palo Alto Networks, Inc. · Vendor: hotdog project

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

Am I affected?

Timeline

2022-04-19 23:15 UTCPublished CVE record published
2026-06-17 04:04 UTCUpdated Record last modified

hotdog project hotdog UPGRADE

Affected: < 1.0.1

Fixed in: 1.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.0.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hotdog

Note

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

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-2021-3101?

hotdog: upgrade to 1.0.1. Exact commands for each OS are on this page.

Is CVE-2021-3101 being exploited?

CVE-2021-3101 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-2021-3101 affect?

CVE-2021-3101 affects hotdog. Severity is high (CVSS 8.8). Hotdog, prior to v1.0.1, did not mimic the capabilities or the SELinux label of the target JVM process. This would allow a container to gain full privileges on the host, bypassing restrictions set on the container.

How urgent is CVE-2021-3101?

Priority 49/100. High severity; Public exploit reference; On your watchlist

Related CVEs

CVE-2022-0071 HIGH 8.8 UPGRADE Incomplete fix for CVE-2021-3101

References

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