CVE-2026-38447

CriticalCVSS 9.8/10Last modified Aug 31, 2026

Description

osTicket 1.18.3 generates API keys using a predictable construction based on MD5 hashing. The use of MD5, combined with predictable inputs such as the current timestamp and client IP address, significantly reduces entropy. An attacker can approximate the key generation time and brute-force the key space within a feasible time window.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-331

Affected software

No affected versions have been published.

Timeline

Published
Aug 3, 2026
Last modified
Aug 31, 2026
NVD status
Deferred

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CVE-2026-38447: Critical severity, CVSS 9.8 | Vulnix