CVE-2023-20861

score

4.4

cvss

6.5

epss

1.0%

published

2023-03-23

kev added

—

first seen

2026-10-21

Spring Framework versions 6.0.0 - 6.0.6, 5.3.0 - 5.3.25, 5.2.0.RELEASE - 5.2.22.RELEASE, and older unsupported versions contain a denial-of-service caused by processing specially crafted SpEL expressions, letting attackers cause service disruption, exploit requires user to provide malicious SpEL expression.