4.2

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 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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
VMware ≫ Spring Framework Version < 5.3.49
VMware ≫ Spring Framework Version >= 6.1.0 < 6.1.28
VMware ≫ Spring Framework Version >= 6.2.0 < 6.2.19
VMware ≫ Spring Framework Version >= 7.0.0 < 7.0.8
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.095
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
VMware 4.2 1.6 2.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
CWE-384 Session Fixation

Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.

https://spring.io/security/cve-2026-41839
Vendor Advisory