GHSA-r5w3-xv2f-j59q Spring Framework Algorithmic Denial of Service via SpEL Expressions

• Maven org.springframework:spring-expression: >= 7.0.0, < 7.0.8 → fixed in 7.0.8 • Maven org.springframework:spring-expression: >= 6.2.0, < 6.2.19 → fixed in 6.2.19 • Maven org.springframework:spring-expression: >= 6.1.0, <= 6.1.21 (no fix yet) • Maven org.springframework:spring-expression: <= 5.3.39 (no fix yet)

Applications that evaluate user-supplied Spring Expression Language (SpEL) expressions are vulnerable to an Algorithmic Denial of Service (DoS). By providing a specially crafted expression, an attacker can trigger excessive resource consumption during evaluation, leading to application degradation or unavailability. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.