Bug 2486703 (CVE-2026-41846)

Summary: CVE-2026-41846 Spring Framework: Spring Framework: Cross-site scripting (XSS) via user-supplied values in JSP form tags
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: sdawley
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Spring MVC applications, part of the Spring Framework. This vulnerability allows a remote attacker to inject arbitrary HTML or JavaScript code due to improper handling of user-supplied values in the cssClass, cssErrorClass, or cssStyle attributes of JSP form tags. Successful exploitation can lead to a cross-site scripting (XSS) attack, enabling the attacker to execute malicious scripts in the victim's browser.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-06-09 05:01:32 UTC 
Spring MVC applications which accept user-supplied values in the cssClass, cssErrorClass, or cssStyle attributes of JSP form tags allow arbitrary HTML/JavaScript code injection, potentially resulting in a cross-site scripting (XSS) vulnerability.

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.