Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.
Metrics
Affected Vendors & Products
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Advisories
No advisories yet.
Fixes
Solution
Upgrade to a release that bundles puppet-agent 8.22.2 or 9.1.3 (Puppet Enterprise 2023.8.13, 2025.12.1, or 2026.0.1) and restart puppet server so the fixed code is loaded.
Workaround
No workaround given by the vendor.
References
| Link | Providers |
|---|---|
| https://www.puppet.com/security |
|
History
Tue, 03 Nov 2026 20:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate. | |
| Title | Report Deserialization Code Execution | |
| Weaknesses | CWE-502 CWE-94 |
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| References |
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| Metrics |
cvssV4_0
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Projects
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MITRE
Status: PUBLISHED
Assigner: Perforce
Published:
Updated: 2026-11-03T20:52:37.394Z
Reserved: 2026-10-23T11:46:21.022Z
Link: CVE-2026-115731
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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