CVE-2026-1157319.4Critical
Report Deserialization Code Execution
Perforce · Puppet Enterprise
Not in CISA KEVVendor fix available
No EPSS score yet. The score appears once FIRST publishes it.
9.4CriticalCVSS
LowMediumHighCrit.
DescriptionNVD
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.
Coverage1 article · 1 outlet
First in our coverage: SecurityOnline, 4 Nov.
- PoC exposes critical remote code flaw in Puppet ServerSecurityOnline · first in our coverage
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