Intel

AIKIDO-2026-865056

spring-webflux is vulnerable to Denial of Service (DoS)

Denial of Service (DoS)CVE-2026-47891 Published 6 days ago

43

Medium Risk

This Affects:

JAVAspring-webflux
0.0.1 - 7.0.8
Fixed in 7.0.9
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TL;DR

spring-webflux Jaxb2Decoder does not enforce maxInMemorySize when parsing XML with the Aalto processor. A client can send a large XML body and bypass the configured memory limit. That can exhaust heap on the decoder path. The patch applies maxInMemorySize to Aalto-backed XML decoding.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range and WebFlux XML decoding uses the Aalto processor via Jaxb2Decoder.

Background info

spring-webflux is vulnerable to Denial of Service (DoS) in versions 0.0.1 - 7.0.8.

How to fix this

Upgrade the org.springframework:spring-webflux library to the patch version.