CVE-2026-38447

Severity CVSS v4.0:

Pending analysis

Type:

CWE-331 Insufficient Entropy

Publication date:

03/08/2026

Last modified:

03/08/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

References to Advisories, Solutions, and Tools

https://github.com/fr3akhacks/cve-disclosures/blob/master/osTicket/CVE-2026-38447.md
https://github.com/osTicket/osTicket/blob/v1.18.3/include/class.api.php#L149
https://github.com/osTicket/osTicket/blob/v1.18.3/include/class.misc.php
https://github.com/osTicket/osTicket/commit/feccb6a3a90863fd31215ee738b39762177e658c