CVE-2026-61791 OCO-Server - Stored XSS

OCO-Server < 1.2.1 contains a stored XSS caused by improper escaping of computer hostnames in Html::commandButton() inline JavaScript handlers, letting remote attackers with agent-registration-key execute scripts in admin sessions, exploit requires agent self-registration enabled.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Stored XSS
Impact
Client Script Exec, Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Published
22 October 2026
Updated
23 October 2026
Weakness
CWE-83

Vendor fix

Update to version 1.2.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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