by Kastro
Paper/Archive/CVE-2026-38447

CVE-2026-38447

mitre — osTicket 1.18.3 generates API keys using a predictable construction based on MD5 hashing.

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 52.1.521 × 2010.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
n/an/a–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/osTicket/osTicket/blob/v1.18.3/include/class.api.php#L149refgithub.com/osTicket/osTicket/blob/v1.18.3/include/class.misc.phprefgithub.com/osTicket/osTicket/commit/feccb6a3a90863fd31215ee738b39762177e658crefgithub.com/fr3akhacks/cve-disclosures/blob/master/osTicket/CVE-2026-38447.md