CVE-2026-38447
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
osTicket
PublishedAug 3, 2026
First seenAug 3, 2026
Weakness typeCWE-331CWE-331
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| osTicket | 1.18.3 | — |
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