Vulnerability · Published Nov 3, 2026 · Assigned by Perforce
CVE-2026-115731Report Deserialization Code Execution
Critical 9.4
In plain English
A critical-severity unsafe deserialization in Puppet Enterprise from Perforce. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | puppet-agent | 7.23.0-1+deb12u1 | DEBIAN-CVE-2026-115731 |
| Debian:13 | puppet-agent | 8.10.0-5+deb13u1 | DEBIAN-CVE-2026-115731 |
| Ubuntu:22.04:LTS | puppet | no fix listed | UBUNTU-CVE-2026-115731 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Perforce | Puppet Enterprise | 2023.8.0 – before 2023.8.132025.0.0 – before 2025.12.12026.0.0 – before 2026.0.1 |
Weakness: CWE-502, CWE-94 · Vector: 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