AIKIDO-2026-575580
spring-webflux is vulnerable to Sensitive Cookie with Improper SameSite Attribute
43
Medium Risk
This Affects:
spring-webfluxTL;DR
spring-webflux JettyCoreServerHttpResponse serializes cookies without the SameSite attribute. Browsers then apply a weaker default cookie policy than the application intended. That can make session cookies available in some cross-site requests. The patch preserves SameSite when writing cookies on Jetty Core.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and a WebFlux application runs on the Jetty 12 Core reactive adapter.
Background info
spring-webflux is vulnerable to Sensitive Cookie with Improper SameSite Attribute in versions 6.2.0 - 7.0.8.
How to fix this
Upgrade the org.springframework:spring-webflux library to the patch version.
Are You Affected?
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