What is CVE-2026-18516?

CVE-2026-18516 is a critical-severity vulnerability in Arcadia Technology, Llc Crafty Controller, classified under Improper Encoding or Escaping of Output. CVSS score: 9.6/10. Published 2026-10-16.

How severe is CVE-2026-18516?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Vulnerability in Arcadia Technology, Llc Crafty Controller

CVE-2026-18516

An output escaping vulnerability in the Audit Logs component of Crafty Controller allows a remote, unauthenticated attacker to perform stored cross-site scripting via HTTP header injection

Published 2026-10-16 · last modified 2026-10-16.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Arcadia Technology, Llc Crafty Controller

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

References

gitlab.com/crafty-controller/crafty-4/-/work_items/743

Frequently asked questions

What is CVE-2026-18516?: CVE-2026-18516 is a critical-severity vulnerability in Arcadia Technology, Llc Crafty Controller, classified under Improper Encoding or Escaping of Output. CVSS score: 9.6/10. Published 2026-10-16.
How severe is CVE-2026-18516?: Critical severity. CVSS v3 base score is 9.6 out of 10.