Spring Framework Denial of Service via Unbounded Cache in SpEL
Applications which accept user-supplied Spring Expression Language (SpEL) expressions may be vulnerable to a Denial of Service (DoS) attack if the evaluation of a SpEL expression triggers unbounded cache growth. 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.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-41851US | high7.5 | — | ||
Applications which accept user-supplied Spring Expression Language (SpEL) expressions may be vulnerable to a Denial of Service (DoS) attack if the evaluation of a SpEL expression t… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/spring-projects/spring-frameworkPACKAGE
- https://github.com/spring-projects/spring-framework/commit/2c18c33ce0f89bf718c184190cfb7ed49b4276fbWEB
- https://github.com/spring-projects/spring-framework/commit/76a36dfd707cddbe7118a81c2e055b36501d2cffWEB
- https://github.com/spring-projects/spring-framework/releases/tag/v6.2.19WEB
- https://github.com/spring-projects/spring-framework/releases/tag/v7.0.8WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-41851ADVISORY
- https://spring.io/security/cve-2026-41851WEB
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