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CVE-2026-14449mediumCWE-79

POST-based reflected XSS via the thanks parameter in form components

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.4epss 0.3%
exploitation probability
0.3%top 81% of all CVEs
observed exploitation
nono source reports it
u5CMS through v12.8.8 is vulnerable to reflected XSS via the ‘thanks’ parameter in multiple form components
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H
Affected products
u5CMS · u5CMS