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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.

PUBLISHED Reserved 2026-04-22 | Published 2026-06-09 | Updated 2026-06-09 | Assigner vmware




MEDIUM: 4.2CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

Problem types

CWE-384: Session Fixation

Product status

Default status
unaffected

7.0.0 (custom) before 7.0.8
affected

6.2.0 (custom) before 6.2.19
affected

6.1.0 (custom) before 6.1.28
affected

5.3.0 (custom) before 5.3.49
affected

References

spring.io/security/cve-2026-41839

cve.org (CVE-2026-41839)

nvd.nist.gov (CVE-2026-41839)

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