The Contest Gallery WordPress plugin before 13.1.0.6 does not have capability checks and does not sanitise or escape the cg-search-user-name-original parameter before using it in a SQL statement when exporting users from a gallery, which could allow unauthenticated to perform SQL injections attacks, as well as get the list of all users registered on the blog, including their username and email address

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-24915
• https://gist.github.com/tpmiller87/6c05596fe27dd6f69f1aaba4cbb9c917
• https://wpscan.com/vulnerability/45ee86a7-1497-4c81-98b8-9a8e5b3d4fac