[MM-65684] Sanitize teams for /api/v4/channels/{channel_id}/common_teams endpoint (#34110) (#34182)

server/channels/api4/channel.go

@@ -2467,7 +2467,7 @@ func getGroupMessageMembersCommonTeams(c *Context, w http.ResponseWriter, r *htt
 		return
 	}
 
-	if err := json.NewEncoder(w).Encode(teams); err != nil {
+	if err := json.NewEncoder(w).Encode(c.App.SanitizeTeams(*c.AppContext.Session(), teams)); err != nil {
 		c.Logger.Warn("Error while writing response from getGroupMessageMembersCommonTeams", mlog.Err(err))
 	}
 }