Vmware Spring Web Flow up to 2.5.1/3.0.1/4.0.0 cross site scripting

Summaryinfo

A vulnerability described as problematic has been identified in Vmware Spring Web Flow up to 2.5.1/3.0.1/4.0.0. The affected element is an unknown function. Executing a manipulation can lead to cross site scripting. The identification of this vulnerability is CVE-2026-40986. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Vmware Spring Web Flow up to 2.5.1/3.0.1/4.0.0 and classified as problematic. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

Spring Web Flow's JavaScript RemotingHandler renders the body of an error response as HTML even when the response is not "text/html", which can result in a scripting attack in the user's browser if the error response from the server contains error details with input reflected from an attacker. Affected versions: Spring Web Flow 4.0.0; 3.0.0 through 3.0.1; 2.5.0 through 2.5.1.

The advisory is available at spring.io. This vulnerability was named CVE-2026-40986 since 04/16/2026. The exploitation appears to be difficult. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/11/2026). This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 2.5.2, 3.0.2 or 4.0.1 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Vmware

Name

• Spring Web Flow

Version

• 2.5.0
• 2.5.1
• 3.0.0
• 3.0.1
• 4.0

License

• commercial

Website

• Vendor: https://www.vmware.com/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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