CVE-2026-41847 Details
Description
Spring WebFlux applications may be vulnerable to a security bypass when using the Kotlin Router DSL. Affected versions: Spring Framework 5.3.0 through 5.3.48.
A security bypass vulnerability has been identified in Spring WebFlux applications that use the Kotlin Router DSL. This issue affects Spring Framework versions 5.3.0 through 5.3.48, including versions no longer supported. The vulnerability arises when an application applies a filter that modifies the 'ServerRequest' before passing it to the next handler. In such cases, any security enhancements made to the request by the filter are ignored, and the original request is sent to the handler, undermining the intended security measures.
Users should upgrade to Spring Framework version 5.3.49. This version is available through the Spring Commercial subscription.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://spring.io/security/cve-2026-41847 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
| CWE-284 | Improper Access Control | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| vmware spring framework | >= 5.3.0, < 5.3.49 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 11, 2026 | Initial Analysis | [email protected] |
| Jun 9, 2026 | New CVE Received | [email protected] |