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TI-2026-28144 Aliases CVE-2026-38447GHSA-phjh-749w-3xjq

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

Priority MEDIUM 50CWE-331Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00671 52nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-38447
  2. 2026-10-03 Alias added: GHSA-phjh-749w-3xjq

References

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences