Critical (9.8). EPSS 75% chance of exploitation in the next 30 days. Fixed in org.springframework.data:spring-data-rest-core 2.6.9.RELEASE, 3.0.1.RELEASE.
Malicious PATCH requests submitted to servers using Spring Data REST versions prior to 2.6.9 (Ingalls SR9), versions prior to 3.0.1 (Kay SR1) and Spring Boot versions prior to 1.5.9, 2.0 M6 can use specially crafted JSON data to run arbitrary Java code.
Severity
CVSS 3.0
9.8 critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
75% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)