CVE-2026-41850: Spring Framework Algorithmic Denial of Service via SpEL Expressions

June 9, 2026 (updated July 30, 2026)

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.

References

github.com/advisories/GHSA-r5w3-xv2f-j59q
github.com/spring-projects/spring-framework/releases/tag/v6.2.19
github.com/spring-projects/spring-framework/releases/tag/v7.0.8
nvd.nist.gov/vuln/detail/CVE-2026-41850
spring.io/security/cve-2026-41850

Code Behaviors & Features

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