CVE-2011-0528: Puppet 2.6.0 through 2.6.3 does not properly restrict access to node resources, which allows remote authentica

Routine

MEDIUM 5.5DOWNGRADE

CVE-2011-0528 is a medium-severity flaw (CVSS 5.5) affecting puppet. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Puppet 2.6.0 through 2.6.3 does not properly restrict access to node resources, which allows remote authenticated Puppet nodes to read or modify the resources of other nodes via unspecified vectors.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-264
Published	2014-02-17
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: puppet

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-02-17 16:55 UTCPublished CVE record published
2026-06-16 23:27 UTCUpdated Record last modified

puppet puppet DOWNGRADE

Affected: 2.6.0 · 2.6.1 · 2.6.2 · 2.6.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.6.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.6.0 (Debian / Ubuntu)

apt-cache madison puppet sudo apt install puppet=<VERSION_BEFORE_2.6.0> sudo apt-mark hold puppet

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list puppet sudo dnf downgrade puppet-<VERSION_BEFORE_2.6.0> sudo dnf versionlock add puppet

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-2011-0528?

puppet: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-0528 being exploited?

CVE-2011-0528 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-2011-0528 affect?

CVE-2011-0528 affects puppet. Severity is medium (CVSS 5.5). Puppet 2.6.0 through 2.6.3 does not properly restrict access to node resources, which allows remote authenticated Puppet nodes to read or modify the resources of other nodes via unspecified vectors.

How urgent is CVE-2011-0528?

Priority 38/100. No elevated risk signals yet.

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References

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