OS Command Injection

A user with specific node group editing permissions and a specially crafted class parameter could be used to execute commands as root on the primary host. It affects Puppet Enterprise versions 2018.1.8 through 2023.8.3 and 2025.3 and has been resolved in versions 2023.8.4 and 2025.4.0.

Cleartext Storage of Sensitive Information for Puppet Resource API

Puppet resource_api (shipped in Puppet Core 8.x and Puppet Enterprise 2023.8.x and 2025.x) does not preserve the sensitive flag on parameters defined via the resource-api, causing values such as passwords to be stored in cleartext in the agent's local transaction state cache. Affected versions of the resource_api module include all versions between 1.5.0 - 1.9.1 and 2.0.0 The issue was fixed in puppet resource_api 1.9.2 and 2.0.1 released with Puppet Core 8.20.0 and PE 2023.8.10 & PE 2025.11.0.

Insufficiently Protected Credentials in Puppet Enterprise 2025.4 and 2025.5

In Puppet Enterprise versions 2025.4.0 and 2025.5, the encryption key used for encrypting content in the Infra Assistant database was not excluded from the files gathered by Puppet backup. The key is only present on the system if the user has a Puppet Enterprise Advanced license and has enabled the Infra Assistant feature. The key is used for encrypting one particular bit of data in the Infra Assistant database: the API key for their AI provider account. This has been fixed in Puppet Enterprise version 2025.6, and release notes for 2025.6 have remediation steps for users of affected versions who can't update to the latest version.

puppet: Filebucket denial of service

Unspecified vulnerability in Puppet 2.6.x before 2.6.15 and 2.7.x before 2.7.13, and Puppet Enterprise (PE) Users 1.0, 1.1, 1.2.x, 2.0.x, and 2.5.x before 2.5.1 allows remote authenticated users with agent SSL keys to (1) cause a denial of service (memory consumption) via a REST request to a stream that triggers a thread block, as demonstrated using CVE-2012-1986 and /dev/random; or (2) cause a denial of service (filesystem consumption) via crafted REST requests that use "a marshaled form of a Puppet::FileBucket::File object" to write to arbitrary file locations.

Denial of Service for Revocation of Auto Renewed Certificates

For certificates that utilize the auto-renew feature in Puppet Server, a flaw exists which prevents the certificates from being revoked.

A privilege escalation allowing remote code execution was discovered in the orchestration service.

Open redirect vulnerability in the Console in Puppet Enterprise before 2015.2.1 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via the string parameter.

The console in Puppet Enterprise 3.7.x, 3.8.x, and 2015.2.x does not set the secure flag for the JSESSIONID cookie in an HTTPS session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an HTTP session.

Versions of Puppet Enterprise prior to 2016.4.5 or 2017.2.1 failed to mark MCollective server private keys as sensitive (a feature added in Puppet 4.6), so key values could be logged and stored in PuppetDB. These releases use the sensitive data type to ensure this won't happen anymore.

nginx: Integer overflow in nginx range filter module leading to memory disclosure

Nginx versions since 0.5.6 up to and including 1.13.2 are vulnerable to integer overflow vulnerability in nginx range filter module resulting into leak of potentially sensitive information triggered by specially crafted request.

The console in Puppet Enterprise 2015.x and 2016.x prior to 2016.4.0 includes unsafe string reads that potentially allows for remote code execution on the console node.

Cross-site scripting (XSS) vulnerability in the console in Puppet Enterprise before 2015.2.1 allows remote attackers to inject arbitrary web script or HTML via the string parameter, related to Login Redirect.

Puppet Enterprise 3.7.x and 3.8.0 might allow remote authenticated users to manage certificates for arbitrary nodes by leveraging a client certificate trusted by the master, aka a "Certificate Authority Reverse Proxy Vulnerability."

The Puppet Communications Protocol in Puppet Enterprise 2015.3.x before 2015.3.3 does not properly validate certificates for the broker node, which allows remote non-whitelisted hosts to prevent runs from triggering via unspecified vectors.

The Puppet Communications Protocol (PCP) Broker incorrectly validates message header sizes. An attacker could use this to crash the PCP Broker, preventing commands from being sent to agents. This is resolved in Puppet Enterprise 2016.4.3 and 2016.5.2.

mcollective: Improper validation of fields in MCollective pings

MCollective 2.7.0 and 2.8.x before 2.8.9, as used in Puppet Enterprise, allows remote attackers to execute arbitrary code via vectors related to the mco ping command.

Puppet Enterprise 2015.3.3 and 2016.x before 2016.4.0, and Puppet Agent 1.3.6 through 1.7.0 allow remote attackers to bypass a host whitelist protection mechanism and execute arbitrary code on Puppet nodes via vectors related to command validation, aka "Puppet Execution Protocol (PXP) Command Whitelist Validation Vulnerability."

Open redirect vulnerability in the Console in Puppet Enterprise 2015.x and 2016.x before 2016.4.0 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a // (slash slash) followed by a domain in the redirect parameter. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6501.

Puppet Enterprise (PE) before 2.6.1 does not properly invalidate sessions when the session secret has changed, which allows remote authenticated users to retain access via unspecified vectors.

Puppet Enterprise 2015.3 before 2015.3.1 allows remote attackers to bypass a host whitelist protection mechanism by leveraging the Puppet communications protocol.