Cross-site scripting in Spring Framework - CVE-2026-59281
Published: August 28, 2026
Vulnerability identifier: #VU146229
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-59281
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to inject arbitrary html/javascript code.
The vulnerability exists due to cross-site scripting in Errors.getFieldErrors() and Errors.getFieldError() accessors when rendering field errors from a data-binding Errors instance with HTML escaping enabled. A remote attacker can supply crafted input that is later rendered in field errors to inject arbitrary html/javascript code.
The issue can lead to reflected cross-site scripting in Spring MVC and WebFlux applications.
Affected software
Spring Framework
Library Support for Spring
OpenPages for IBM Cloud Pak for Data
OpenPages Cloud pak for data service version
Library Support for Spring
OpenPages for IBM Cloud Pak for Data
OpenPages Cloud pak for data service version
How to mitigate CVE-2026-59281
Install security update from vendor's website.
Spring Framework - addressed in versions 5.2.26, 5.3.50, 6.0.31, 6.1.29, 6.2.20, 7.0.8.1, 7.0.9
Library Support for Spring - update to 3.5.19
OpenPages for IBM Cloud Pak for Data - addressed in versions 5.3.1 Patch 16, 5.4.0
OpenPages Cloud pak for data service version - addressed in versions 9.6.7, 10.0.0
Library Support for Spring - update to 3.5.19
OpenPages for IBM Cloud Pak for Data - addressed in versions 5.3.1 Patch 16, 5.4.0
OpenPages Cloud pak for data service version - addressed in versions 9.6.7, 10.0.0