CVSS 3.1
4.2 mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:NCVE-2026-41839
Medium (4.2) in vmware spring framework. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in org.springframework:spring-webflux 6.2.19, 7.0.8.
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-31)
- CWE
- CWE-384
- Published
- Modified
- Record from
- the NVD, synced
Affected
- vmware:spring_framework
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-4hfh-6x8g-gwpp | Maven | org.springframework:spring-webflux | >=7.0.0 <7.0.8 | 7.0.8 |
| GHSA-4hfh-6x8g-gwpp | Maven | org.springframework:spring-webflux | >=6.2.0 <6.2.19 | 6.2.19 |
| GHSA-4hfh-6x8g-gwpp | Maven | org.springframework:spring-webflux | >=6.1.0 <=6.1.21 | no fix published |
| GHSA-4hfh-6x8g-gwpp | Maven | org.springframework:spring-webflux | <=5.3.39 | no fix published |