Jeesite 1.2.7 uses the apache shiro version 1.2.3 affected by CVE-2016-4437. Because of this version of the java deserialization vulnerability, an attacker could exploit the vulnerability to execute arbitrary commands via the rememberMe parameter.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-19229.json"