bbs-go through 4.4.6 contains an authentication bypass vulnerability in the /api/login/googleonetap endpoint that allows remote attackers to log in as other users by submitting Google ID tokens issued to any OAuth client. Attackers operating their own Google OAuth client can capture a victim's Google-signed ID token and replay it, since the aud claim is never checked, to obtain an authenticated session as the victim's Google-linked account.

Cross Site Scripting vulnerability in mlogclub bbs-go v. 3.5.5. and before allows a remote attacker to execute arbitrary code via a crafted payload to the announcements parameter in the settings function.

Cross Site Scripting vulnerability in mlogclub bbs-go v. 3.5.5. and before allows a remote attacker to execute arbitrary code via a crafted payload to the comment parameter in the article function.