CVE-2026-41839 — Spring Framework Escalation via Session Fixation in WebFlux
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 …
Published: 2026-06-09 · CVSS: 4.2 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7