What is CVE-2026-47889?

CVE-2026-47889 is a high-severity vulnerability in Spring Framework, classified under CWE-1275. CVSS score: 7.5/10. Published 2026-08-27.

How severe is CVE-2026-47889?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Spring Framework

CVE-2026-47889

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

EPSS: 0.001 (4.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Spring Framework

Weakness classification (CWE)

CWE-1275

References

security@vmware.com

Frequently asked questions

What is CVE-2026-47889?: CVE-2026-47889 is a high-severity vulnerability in Spring Framework, classified under CWE-1275. CVSS score: 7.5/10. Published 2026-08-27.
How severe is CVE-2026-47889?: High severity. CVSS v3 base score is 7.5 out of 10.