Spring Framework Escalation via Session Fixation in WebFlux
At a glance
Severity
MEDIUM 4.2
EPSS
EPSS 0.21 % · percentile 11 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
vmware
NVD status
Analyzed
Description
A WebFlux application with a compromised subdomain (for example, compromised via cross-site scripting (XSS)) is vulnerable to an escalation attack exchanging a known session ID for that of an authenticated user.
Affected versions:
Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.