CVE-2026-115731
Report Deserialization Code Execution
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.
Fixes and workarounds
Fix
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.
Source: CNA: PerforceAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Puppet Enterprise Perforce |
≥ 2023.8.0; < 2023.8.13 (affected, custom) ≥ 2025.0.0; < 2025.12.1 (affected, custom) ≥ 2026.0.0; < 2026.0.1 (affected, custom) 2023.8.13 (unaffected) 2025.12.1 (unaffected) 2026.0.1 (unaffected) Other versions: affected |
CNA: Perforce |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 9.4 critical |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | CNA: Perforce |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
For agents and automation
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