CVE-2023-20861: Spring Framework vulnerable to denial of service via specially crafted SpEL expression

March 23, 2023 (updated February 2, 2024)

In 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, it is possible for a user to provide a specially crafted SpEL expression that may cause a denial-of-service (DoS) condition.

References

github.com/advisories/GHSA-564r-hj7v-mcr5
github.com/spring-projects/spring-framework/commit/430fc25acad2e85cbdddcd52b64481691f03ebd1
nvd.nist.gov/vuln/detail/CVE-2023-20861
security.netapp.com/advisory/ntap-20230420-0007/
spring.io/security/cve-2023-20861

Code Behaviors & Features

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