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CVE-2016-2785

32
FAUCET Score

CVE-2016-2785 describes a critical vulnerability in Puppet Server before 2.3.2, Ruby puppetmaster in Puppet 4.x before 4.4.2, and Puppet Agent before 1.4.2, where incorrect URL decoding could allow remote attackers to bypass auth.conf access restrictions. With a CVSS score of 9.8, this vulnerability is highly severe, allowing unauthenticated attackers to achieve full confidentiality, integrity, and availability compromise with low attack complexity. Despite its critical nature, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.0.0CPE matchmatch criteria
cpe:2.3:a:puppet:puppet:4.0.0:*:*:*:*:*:*:*
4.0.0CPE matchmatch criteria
cpe:2.3:a:puppet:puppet:4.0.0:rc1:*:*:*:*:*:*
4.0.0CPE matchmatch criteria
cpe:2.3:a:puppet:puppet:4.0.0:rc2:*:*:*:*:*:*
4.0.0CPE matchmatch criteria
cpe:2.3:a:puppet:puppet:4.0.0:rc3:*:*:*:*:*:*
4.1.0CPE matchmatch criteria
cpe:2.3:a:puppet:puppet:4.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.89%
Probability of exploitation in next 30 days
EPSS Percentile
85.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0289 is in the 76th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

rubygemspatch availablevia ghsa
Product: puppetFixed in: 4.4.2
github_advisoryvendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)Fixed in: puppet
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: puppet
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno) InstallerFixed in: puppet
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: puppet
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: puppet
redhatend of lifevia redhat_api
Product: OpenStack ForemanFixed in: puppet

Vendor Advisories (2)

rubygemsGHSA-pqj5-7r86-64fvcritical

Puppet Improper Access Control

May 13, 2022
redhatCVE-2016-2785Low

puppet: incorrect URL decoding

Apr 26, 2016

References

github.com / puppetlabs/puppet/pull/4921/commits/8d2ce797db265720f0a20d1d46ee2757b4e4f6b2
Vendor Advisory
puppet.com / security/cve/cve-2016-2785
Vendor Advisory
security.gentoo.org / glsa/201606-02
Third Party Advisory