It was discovered that the hawtio servlet 1.4 uses a single HttpClient instance to proxy requests with a persistent cookie store (cookies are stored locally and are not passed between the client and the end URL) which means all clients using that proxy are sharing the same cookies.
Severity
CVSS 3.0
9.0 critical
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS
0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)