Description
In Apache httpd 2.4.0 to 2.4.29, the expression specified in <FilesMatch> could match '$' to a newline character in a malicious filename, rather than matching only the end of the filename. This could be exploited in environments where uploads of some files are are externally blocked, but only by matching the trailing portion of the filename.
Remediation
References
Related Vulnerabilities
WordPress Plugin Gutenberg Template Library & Redux Framework Cross-Site Request Forgery (4.1.20)
MediaWiki Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2021-31545)
Internet Information Services Other Vulnerability (CVE-2002-0150)
WordPress Plugin Affiliates Manager Cross-Site Request Forgery (2.6.5)
WordPress Plugin WP-Lister Lite for Amazon Cross-Site Scripting (2.4.3)