CVE-2020-5421: Improper Input Validation in Spring Framework

April 30, 2021 (updated October 21, 2021)

In Spring Framework versions 5.2.0 - 5.2.8, 5.1.0 - 5.1.17, 5.0.0 - 5.0.18, 4.3.0 - 4.3.28, and older unsupported versions, the protections against RFD attacks from CVE-2015-5211 may be bypassed depending on the browser used through the use of a jsessionid path parameter.

References

github.com/advisories/GHSA-rv39-3qh7-9v7w
nvd.nist.gov/vuln/detail/CVE-2020-5421
tanzu.vmware.com/security/cve-2020-5421

Code Behaviors & Features

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