CVE-2019-25211

Name of the Vulnerable Software and Affected Versions Gin-Gonic CORS middleware versions prior to 1.6.0

Description The issue arises from the mishandling of a wildcard at the end of an origin string by the parseWildcardRules function in Gin-Gonic CORS middleware. This results in unintended origins being allowed. For example, https://example.community/* is allowed when the intention is to only allow https://example.com/*, and http://localhost.example.com/* is allowed when the intention is to only allow http://localhost/*.

Recommendations For versions prior to 1.6.0, update to version 1.6.0 or later to resolve the issue. As a temporary workaround, consider manually validating origin strings to ensure they match the intended patterns, avoiding the use of wildcards at the end of origin strings until a patch is applied.