Medium severity · published Oct 16, 2026
CVE-2026-90821
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Crafty Controller
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
An input neutralization vulnerability in the Webhook URL form field component of Crafty Controller allows a remote, authenticated attacker to perform stored XSS via malicious form input
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Crafty Controller · Arcadia Technology, LLC
4.2.0 before 4.11.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90821
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-90821
gitlab.com
https://gitlab.com/crafty-controller/crafty-4/-/work_items/745
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