CVE-2026-47889 Security Details

CVE ID

CVE-2026-47889

CWE

CWE-1275

CVE Description

A WebFlux application running on the Jetty 12 Core reactive adapter serializes response cookies without the sameSite attribute. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19

Published

Aug 20, 2026

CVSS Score & Severity

2.1Low

CVSS Vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS Score

0.428%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

org/springframework/http/server/reactive/JettyCoreServerHttpResponse$ResponseHttpCookie.getSameSite()Lorg/eclipse/jetty/http/HttpCookie$SameSite;

JVM

Affected Ecosystems

affected

Source

National Vulnerability Database

References

spring.ioPROJECT