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In Spring Framework versions 5.3.0 - 5.3.16, 5.2.0 - 5.2.19, and older unsupported versions, it is possible for a user to provide a specially crafted SpEL expression that may cause a denial of service condition.
Users of affected versions should apply the following mitigation: 5.3.x users should upgrade to 5.3.17+. 5.2.x users should upgrade to 5.2.20+. No other steps are necessary. Releases that have fixed this issue include:
This vulnerability was initially discovered and responsibly reported by 4ra1n.
The VMware Security Response team provides a single point of contact for the reporting of security vulnerabilities in VMware Tanzu products and coordinates the process of investigating any reported vulnerabilities.
To report a security vulnerability in a VMware service or product please refer to the VMware Security Response Policy.