CVE-2026-115731
Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet…
- Risk score
- 56/100
- CVSS
- 9.4 v4.0
- Published
- 3 Nov 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 9.4 critical
References
Original 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.
Last activity 3 Nov 2026. Patch Forecast updates every hour.