{"id":"EM-20261103-POSJ","url":"https://cyber.eventmonitor.net/incident/EM-20261103-POSJ/","type":"cve","title":"Critical puppetserver Vulnerability (CVE-2026-115731)","subtitle":"CVE-2026-115731","subject":"CVE-2026-115731","status":"Developing","severity":"critical","affected":[],"headline":null,"born":"2026-11-03T21:17:01.867Z","firstSignal":"2026-11-03T20:40:10.000Z","lastSignal":"2026-11-03T21:17:01.867Z","updated":"2026-11-04T14:43:58.877Z","revision":1,"life":[{"status":"Born","at":"2026-11-03T21:17:01.867Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-03T21:17:01.867Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-03T20:40:10.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-03T21:17:01.867Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261103-POSJ created."}],"stages":[{"name":"Disclosed","at":"2026-11-03T21:17:01.867Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-03T21:17:01.867Z","detail":"CVSS 9.4 · EPSS 0.4%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-03T20:40:10.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-03T20:40:10.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":4,"title":"Red Hat: CVE-2026-115731 (critical)","text":"puppetserver: openvox-agent: openvox-server: puppetserver: authenticated remote code execution via report event deserialization","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-115731.json"},{"at":"2026-11-03T21:17:01.867Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":4,"title":"CVE-2026-115731 (CVSS 9.4)","text":"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.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115731"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-03T21:17:01.867","score":9.4,"severity":"CRITICAL","desc":"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 ric","product":"","seen":1793803438877},"kev":null,"epss":{"epss":0.00366,"pct":0.30574,"at":1793803438877},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}