Arbitrary Code Injection Vulnerability in Spring MVC and WebFlux Applications
CVE-2026-59281

6.1MEDIUM

Key Information:

Vendor

Spring

Status
Spring Framework
Vendor
CVE Published:
27 August 2026

What is CVE-2026-59281?

Spring MVC and WebFlux applications are susceptible to a serious security vulnerability that arises when a data-binding Errors instance, with HTML escaping enabled, is used to render field errors via the no-argument Errors.getFieldErrors() or Errors.getFieldError() methods. This flaw allows attackers to inject arbitrary HTML or JavaScript code into the application, potentially leading to reflected cross-site scripting (XSS) attacks. It is crucial for developers to assess their Spring Framework-based applications for this vulnerability and apply the necessary patches to mitigate the risk.

Affected Version(s)

Spring Framework 7.0.0 <= 7.0.8

Spring Framework 6.2.0 <= 6.2.19

Spring Framework 6.1.0 <= 6.1.28

References

https://spring.io/security/cve-2026-59281

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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