OpenCATS through 0.9.5-3 has multiple Cross-site Scripting (XSS) issues.
https://www.opencats.org/news/
https://snoopysecurity.github.io/web-application-security/2021/01/16/09_opencats_php_object_injection.html
https://github.com/snoopysecurity/snoopysecurity.github.io/blob/master/web-application-security/2021/01/16/09_opencats_php_object_injection.html
Source: Mitre, NVD
Published: 2021-01-18
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.00849
