CVE-2026-115731

puppet-agent: Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected...

CVE-2026-115731 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-115731, released November 6, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
9.9
critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0037
30th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
openvox-agent · RHEL 10 8.32.0-1.el10sat RHSA-2026:95653 Nov 6, 2026
puppet-agent · Debian 12.15 (bookworm) 7.23.0-1+deb12u1 DEBIAN-CVE-2026-115731 Nov 6, 2026
puppet-agent · Debian 13.5 (trixie) 8.10.0-5+deb13u1 DEBIAN-CVE-2026-115731 Nov 6, 2026

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