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In Spring Security versions 5.4.10, 5.5.6, and 5.6.3 and older unsupported versions, RegexRequestMatcher can easily be misconfigured to be bypassed on some servlet containers.
Applications using RegexRequestMatcher with `.` in the regular expression are possibly vulnerable to an authorization bypass.
Users should update to a version that includes fixes. 5.5.x users should upgrade to 5.5.7 or greater. 5.6.x users should upgrade to 5.6.4 or greater. Releases that have fixed this issue include:
This vulnerability was discovered and responsibly reported by Hiroki Nishino, Toshiki Sasazaki, Yoshinori Hayashi, and Jonghwan Kim from LINE Corporation.
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.