CVE-2026-41839

EUVD-2026-35326
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.2 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 9%
Affected Products (NVD)
VendorProductVersion
vmwarespring_framework
𝑥
< 5.3.49
vmwarespring_framework
6.1.0 ≤
𝑥
< 6.1.28
vmwarespring_framework
6.2.0 ≤
𝑥
< 6.2.19
vmwarespring_framework
7.0.0 ≤
𝑥
< 7.0.8
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libspring-java
bookworm
unimportant
bullseye
unimportant
forky
unimportant
sid
unimportant
trixie
unimportant
Common Weakness Enumeration
References
https://spring.io/security/cve-2026-41839