CVE-2026-115731
Critical
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.
SeverityCritical
CVSS9.4
Exploit probability—
ProductPuppet Enterprise
PublishedNov 3, 2026
First seenNov 4, 2026
How to fix
Update
- Perforce Puppet Enterprise2023.8.13, 2025.12.1, 2026.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Perforce Puppet Enterprise | 2023.8.0 ≤ v < 2023.8.13, 2025.0.0 ≤ v < 2025.12.1, 2026.0.0 ≤ v < 2026.0.1 | 2023.8.13, 2025.12.1, 2026.0.1 |
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