CVE-2026-40986

EUVD-2026-36201
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.8 MEDIUM
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 10.79%
Affected Products (NVD)
VendorProductVersion
broadcomspring_web_flow
𝑥
< 2.5.2
broadcomspring_web_flow
3.0.0 ≤
𝑥
< 3.0.1.1
broadcomspring_web_flow
4.0.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://spring.io/security/cve-2026-40986