CVE-2021-45081: An issue was discovered in Cobbler through 3.3.1

Q: How do I fix CVE-2021-45081?

cobbler: upgrade to newer than 3.3.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-45081 being exploited?

CVE-2021-45081 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-2021-45081 affect?

CVE-2021-45081 affects cobbler. Severity is medium (CVSS 5.9). An issue was discovered in Cobbler through 3.3.1. Routines in several files use the HTTP protocol instead of the more secure HTTPS.

Q: How urgent is CVE-2021-45081?

Priority 42/100. Remotely exploitable, no login, no user action

This month

MEDIUM 5.9REMOTEUPGRADE

CVE-2021-45081 is a medium-severity flaw (CVSS 5.9) affecting cobbler. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Cobbler through 3.3.1. Routines in several files use the HTTP protocol instead of the more secure HTTPS.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 36%)
CISA exploited list	No
Weakness	CWE-319
Published	2022-02-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cobbler project

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

Am I affected?

Timeline

2022-02-20 18:15 UTCPublished CVE record published
2026-06-17 04:13 UTCUpdated Record last modified

cobbler project cobbler UPGRADE

Affected: <= 3.3.1

Fixed in: newer than 3.3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.3.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cobbler

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-2021-45081?

cobbler: upgrade to newer than 3.3.1. Exact commands for each OS are on this page.

Is CVE-2021-45081 being exploited?

CVE-2021-45081 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-2021-45081 affect?

CVE-2021-45081 affects cobbler. Severity is medium (CVSS 5.9). An issue was discovered in Cobbler through 3.3.1. Routines in several files use the HTTP protocol instead of the more secure HTTPS.

How urgent is CVE-2021-45081?

Priority 42/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-0860 CRITICAL 9.1 UPGRADE MITIGATE Improper Authorization in GitHub repository cobbler/cobbler prior to 3.3.2.
CVE-2021-45083 HIGH 7.1 UPGRADE MITIGATE An issue was discovered in Cobbler before 3.3.1
CVE-2021-45082 HIGH 7.8 UPGRADE MITIGATE An issue was discovered in Cobbler before 3.3.1
CVE-2021-40325 HIGH 7.5 UPGRADE Cobbler before 3.3.0 allows authorization bypass for modification of settings.
CVE-2021-40324 HIGH 7.5 UPGRADE Cobbler before 3.3.0 allows arbitrary file write operations via upload_log_data.

References

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