CVE-2026-40986
Medium
Description
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.
SeverityMedium
CVSS4.8
Exploit probability—
Product
Broadcom Spring Web Flow
PublishedJun 11, 2026
First seenJun 11, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- broadcom spring_web_flow2.5.2, 3.0.1.1 or later
- org.springframework.webflow:spring-webflow4.0.1, 3.0.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| broadcom spring_web_flow | v < 2.5.2, 3.0.0 ≤ v < 3.0.1.1, 4.0.0 | 2.5.2, 3.0.1.1 |
| org.springframework.webflow:spring-webflowMaven | 4.0.0 ≤ v < 4.0.1, 3.0.0 ≤ v < 3.0.2, v ≤ 2.5.1 | 4.0.1, 3.0.2 |
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