s9y Serendipity Cross Site Request Forgery

Details ====== Software: s9y Serendipity Version: Mitigations ======= update to Serendipity v2.1.x ======== FIX: ========== https://github.com/s9y/Serendipity/issues/452 Best regards, Zhiyang Zeng of Tencent security platform department...